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34 vulnerabilities found for libgcrypt by gnupg
CVE-2026-41990 (GCVE-0-2026-41990)
Vulnerability from nvd – Published: 2026-04-23 04:39 – Updated: 2026-04-23 16:22
VLAI
Summary
Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
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CVE-2026-41989 (GCVE-0-2026-41989)
Vulnerability from nvd – Published: 2026-04-23 04:30 – Updated: 2026-04-23 16:22
VLAI
Summary
Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.
Severity
6.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
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CVE-2021-40528 (GCVE-0-2021-40528)
Vulnerability from nvd – Published: 2021-09-06 00:00 – Updated: 2025-06-09 15:13
VLAI
Summary
The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
References
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CVE-2021-33560 (GCVE-0-2021-33560)
Vulnerability from nvd – Published: 2021-06-08 00:00 – Updated: 2025-12-03 14:39
VLAI
Summary
Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-325 - Missing Cryptographic Step
Assigner
References
12 references
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CVE-2021-3345 (GCVE-0-2021-3345)
Vulnerability from nvd – Published: 2021-01-29 14:20 – Updated: 2024-08-03 16:53
VLAI
Summary
_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_MISC |
| https://gnupg.org | x_refsource_MISC |
| https://bugs.gentoo.org/show_bug.cgi?id=767814 | x_refsource_MISC |
| https://www.oracle.com//security-alerts/cpujul2021.html | x_refsource_MISC |
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CVE-2015-0837 (GCVE-0-2015-0837)
Vulnerability from nvd – Published: 2019-11-29 21:10 – Updated: 2024-08-06 04:26
VLAI
Summary
The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a "Last-Level Cache Side-Channel Attack."
Severity
No CVSS data available.
CWE
- Other
Assigner
References
5 references
| URL | Tags |
|---|---|
| http://www.debian.org/security/2015/dsa-3184 | x_refsource_MISC |
| http://www.debian.org/security/2015/dsa-3185 | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_CONFIRM |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_CONFIRM |
| https://ieeexplore.ieee.org/document/7163050 | x_refsource_MISC |
Impacted products
Date Public
2012-05-23 00:00
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CVE-2014-3591 (GCVE-0-2014-3591)
Vulnerability from nvd – Published: 2019-11-29 21:02 – Updated: 2024-08-06 10:50
VLAI
Summary
Libgcrypt before 1.6.3 and GnuPG before 1.4.19 does not implement ciphertext blinding for Elgamal decryption, which allows physically proximate attackers to obtain the server's private key by determining factors using crafted ciphertext and the fluctuations in the electromagnetic field during multiplication.
Severity
No CVSS data available.
CWE
- Other
Assigner
References
5 references
| URL | Tags |
|---|---|
| http://www.cs.tau.ac.il/~tromer/radioexp/ | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_MISC |
| http://www.debian.org/security/2015/dsa-3184 | x_refsource_MISC |
| http://www.debian.org/security/2015/dsa-3185 | x_refsource_MISC |
Impacted products
Date Public
2012-05-23 00:00
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CVE-2019-12904 (GCVE-0-2019-12904)
Vulnerability from nvd – Published: 2019-06-19 23:34 – Updated: 2024-08-04 23:32 Disputed
VLAI
Summary
In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://dev.gnupg.org/T4541 | x_refsource_MISC |
| https://github.com/gpg/libgcrypt/commit/daedbbb55… | x_refsource_MISC |
| https://github.com/gpg/libgcrypt/commit/a4c561aab… | x_refsource_MISC |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://lists.apache.org/thread.html/rf9fa47ab664… | mailing-listx_refsource_MLIST |
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CVE-2017-7526 (GCVE-0-2017-7526)
Vulnerability from nvd – Published: 2018-07-26 13:00 – Updated: 2025-12-17 22:06
VLAI
Summary
libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of RSA-1024 while using the left-to-right method for computing the sliding-window expansion. The same attack is believed to work on RSA-2048 with moderately more computation. This side-channel requires that attacker can run arbitrary software on the hardware where the private RSA key is used.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
12 references
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|---|---|
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| https://www.debian.org/security/2017/dsa-3901 | vendor-advisoryx_refsource_DEBIAN |
| https://usn.ubuntu.com/3733-2/ | vendor-advisoryx_refsource_UBUNTU |
| https://eprint.iacr.org/2017/627 | x_refsource_MISC |
| http://www.securityfocus.com/bid/99338 | vdb-entryx_refsource_BID |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | mailing-listx_refsource_MLIST |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_CONFIRM |
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Date Public
2017-06-29 00:00
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CVE-2018-0495 (GCVE-0-2018-0495)
Vulnerability from nvd – Published: 2018-06-13 23:00 – Updated: 2024-08-05 03:28
VLAI
Summary
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
Severity
No CVSS data available.
CWE
- side-channel attack
Assigner
References
21 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 |
Affected:
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3
|
Date Public
2018-06-13 00:00
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CVE-2018-6829 (GCVE-0-2018-6829)
Vulnerability from nvd – Published: 2018-02-07 23:00 – Updated: 2024-08-05 06:17
VLAI
Summary
cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for Libgcrypt's ElGamal implementation.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/weikengchen/attack-on-libgcryp… | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gcrypt-devel/20… | x_refsource_MISC |
| https://github.com/weikengchen/attack-on-libgcryp… | x_refsource_MISC |
| https://www.oracle.com/security-alerts/cpujan2020.html | x_refsource_MISC |
Date Public
2018-02-07 00:00
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CVE-2017-0379 (GCVE-0-2017-0379)
Vulnerability from nvd – Published: 2017-08-29 22:00 – Updated: 2024-08-05 13:03
VLAI
Summary
Libgcrypt before 1.8.1 does not properly consider Curve25519 side-channel attacks, which makes it easier for attackers to discover a secret key, related to cipher/ecc.c and mpi/ec.c.
Severity
No CVSS data available.
CWE
- local side-channel attack
Assigner
References
11 references
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/100503 | vdb-entryx_refsource_BID |
| http://www.oracle.com/technetwork/security-adviso… | x_refsource_CONFIRM |
| https://www.oracle.com/technetwork/security-advis… | x_refsource_CONFIRM |
| http://www.securitytracker.com/id/1041294 | vdb-entryx_refsource_SECTRACK |
| https://www.debian.org/security/2017/dsa-3959 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-security-announce… | x_refsource_MISC |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_MISC |
| https://eprint.iacr.org/2017/806 | x_refsource_MISC |
| https://security-tracker.debian.org/tracker/CVE-2… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2018072… | x_refsource_CONFIRM |
| https://bugs.debian.org/873383 | x_refsource_MISC |
Date Public
2017-08-29 00:00
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CVE-2017-9526 (GCVE-0-2017-9526)
Vulnerability from nvd – Published: 2017-06-11 02:00 – Updated: 2024-08-05 17:11
VLAI
Summary
In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| http://www.oracle.com/technetwork/security-adviso… | x_refsource_CONFIRM |
| https://www.oracle.com/technetwork/security-advis… | x_refsource_CONFIRM |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_CONFIRM |
| http://www.debian.org/security/2017/dsa-3880 | vendor-advisoryx_refsource_DEBIAN |
| http://www.securityfocus.com/bid/99046 | vdb-entryx_refsource_BID |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_CONFIRM |
| https://bugzilla.suse.com/show_bug.cgi?id=1042326 | x_refsource_CONFIRM |
Date Public
2017-06-10 00:00
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CVE-2016-6313 (GCVE-0-2016-6313)
Vulnerability from nvd – Published: 2016-12-13 20:00 – Updated: 2024-08-06 01:29
VLAI
Summary
The mixing functions in the random number generator in Libgcrypt before 1.5.6, 1.6.x before 1.6.6, and 1.7.x before 1.7.3 and GnuPG before 1.4.21 make it easier for attackers to obtain the values of 160 bits by leveraging knowledge of the previous 4640 bits.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
11 references
| URL | Tags |
|---|---|
| http://www.debian.org/security/2016/dsa-3650 | vendor-advisoryx_refsource_DEBIAN |
| https://security.gentoo.org/glsa/201612-01 | vendor-advisoryx_refsource_GENTOO |
| http://www.ubuntu.com/usn/USN-3064-1 | vendor-advisoryx_refsource_UBUNTU |
| http://www.debian.org/security/2016/dsa-3649 | vendor-advisoryx_refsource_DEBIAN |
| https://security.gentoo.org/glsa/201610-04 | vendor-advisoryx_refsource_GENTOO |
| http://www.securitytracker.com/id/1036635 | vdb-entryx_refsource_SECTRACK |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | mailing-listx_refsource_MLIST |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_CONFIRM |
| http://rhn.redhat.com/errata/RHSA-2016-2674.html | vendor-advisoryx_refsource_REDHAT |
| http://www.securityfocus.com/bid/92527 | vdb-entryx_refsource_BID |
| http://www.ubuntu.com/usn/USN-3065-1 | vendor-advisoryx_refsource_UBUNTU |
Date Public
2016-08-17 00:00
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CVE-2015-7511 (GCVE-0-2015-7511)
Vulnerability from nvd – Published: 2016-04-19 21:00 – Updated: 2024-08-06 07:51
VLAI
Summary
Libgcrypt before 1.6.5 does not properly perform elliptic-point curve multiplication during decryption, which makes it easier for physically proximate attackers to extract ECDH keys by measuring electromagnetic emanations.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
9 references
| URL | Tags |
|---|---|
| http://www.debian.org/security/2016/dsa-3478 | vendor-advisoryx_refsource_DEBIAN |
| http://www.ubuntu.com/usn/USN-2896-1 | vendor-advisoryx_refsource_UBUNTU |
| https://security.gentoo.org/glsa/201610-04 | vendor-advisoryx_refsource_GENTOO |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | mailing-listx_refsource_MLIST |
| http://www.debian.org/security/2016/dsa-3474 | vendor-advisoryx_refsource_DEBIAN |
| http://www.securityfocus.com/bid/83253 | vdb-entryx_refsource_BID |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| http://lists.opensuse.org/opensuse-updates/2016-0… | vendor-advisoryx_refsource_SUSE |
| http://www.cs.tau.ac.IL/~tromer/ecdh/ | x_refsource_MISC |
Date Public
2016-02-09 00:00
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CVE-2026-41990 (GCVE-0-2026-41990)
Vulnerability from cvelistv5 – Published: 2026-04-23 04:39 – Updated: 2026-04-23 16:22
VLAI
Summary
Libgcrypt before 1.12.2 mishandles Dilithium signing. Writes to a static array lack a bounds check but do not use attacker-controlled data.
Severity
4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
Impacted products
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CVE-2026-41989 (GCVE-0-2026-41989)
Vulnerability from cvelistv5 – Published: 2026-04-23 04:30 – Updated: 2026-04-23 16:22
VLAI
Summary
Libgcrypt before 1.12.2 sometimes allows a heap-based buffer overflow and denial of service via crafted ECDH ciphertext to gcry_pk_decrypt.
Severity
6.7 (Medium)
SSVC
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CISA Coordinator (v2.0.3)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
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Impacted products
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CVE-2021-40528 (GCVE-0-2021-40528)
Vulnerability from cvelistv5 – Published: 2021-09-06 00:00 – Updated: 2025-06-09 15:13
VLAI
Summary
The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
Assigner
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CVE-2021-33560 (GCVE-0-2021-33560)
Vulnerability from cvelistv5 – Published: 2021-06-08 00:00 – Updated: 2025-12-03 14:39
VLAI
Summary
Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- n/a
- CWE-325 - Missing Cryptographic Step
Assigner
References
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CVE-2021-3345 (GCVE-0-2021-3345)
Vulnerability from cvelistv5 – Published: 2021-01-29 14:20 – Updated: 2024-08-03 16:53
VLAI
Summary
_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_MISC |
| https://gnupg.org | x_refsource_MISC |
| https://bugs.gentoo.org/show_bug.cgi?id=767814 | x_refsource_MISC |
| https://www.oracle.com//security-alerts/cpujul2021.html | x_refsource_MISC |
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CVE-2015-0837 (GCVE-0-2015-0837)
Vulnerability from cvelistv5 – Published: 2019-11-29 21:10 – Updated: 2024-08-06 04:26
VLAI
Summary
The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a "Last-Level Cache Side-Channel Attack."
Severity
No CVSS data available.
CWE
- Other
Assigner
References
5 references
| URL | Tags |
|---|---|
| http://www.debian.org/security/2015/dsa-3184 | x_refsource_MISC |
| http://www.debian.org/security/2015/dsa-3185 | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_CONFIRM |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_CONFIRM |
| https://ieeexplore.ieee.org/document/7163050 | x_refsource_MISC |
Impacted products
Date Public
2012-05-23 00:00
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CVE-2014-3591 (GCVE-0-2014-3591)
Vulnerability from cvelistv5 – Published: 2019-11-29 21:02 – Updated: 2024-08-06 10:50
VLAI
Summary
Libgcrypt before 1.6.3 and GnuPG before 1.4.19 does not implement ciphertext blinding for Elgamal decryption, which allows physically proximate attackers to obtain the server's private key by determining factors using crafted ciphertext and the fluctuations in the electromagnetic field during multiplication.
Severity
No CVSS data available.
CWE
- Other
Assigner
References
5 references
| URL | Tags |
|---|---|
| http://www.cs.tau.ac.il/~tromer/radioexp/ | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | x_refsource_MISC |
| http://www.debian.org/security/2015/dsa-3184 | x_refsource_MISC |
| http://www.debian.org/security/2015/dsa-3185 | x_refsource_MISC |
Impacted products
Date Public
2012-05-23 00:00
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CVE-2019-12904 (GCVE-0-2019-12904)
Vulnerability from cvelistv5 – Published: 2019-06-19 23:34 – Updated: 2024-08-04 23:32 Disputed
VLAI
Summary
In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.) NOTE: the vendor's position is that the issue report cannot be validated because there is no description of an attack
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://dev.gnupg.org/T4541 | x_refsource_MISC |
| https://github.com/gpg/libgcrypt/commit/daedbbb55… | x_refsource_MISC |
| https://github.com/gpg/libgcrypt/commit/a4c561aab… | x_refsource_MISC |
| http://lists.opensuse.org/opensuse-security-annou… | vendor-advisoryx_refsource_SUSE |
| https://lists.apache.org/thread.html/rf9fa47ab664… | mailing-listx_refsource_MLIST |
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CVE-2017-7526 (GCVE-0-2017-7526)
Vulnerability from cvelistv5 – Published: 2018-07-26 13:00 – Updated: 2025-12-17 22:06
VLAI
Summary
libgcrypt before version 1.7.8 is vulnerable to a cache side-channel attack resulting into a complete break of RSA-1024 while using the left-to-right method for computing the sliding-window expansion. The same attack is believed to work on RSA-2048 with moderately more computation. This side-channel requires that attacker can run arbitrary software on the hardware where the private RSA key is used.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
12 references
| URL | Tags |
|---|---|
| https://usn.ubuntu.com/3733-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| http://www.securitytracker.com/id/1038915 | vdb-entryx_refsource_SECTRACK |
| https://www.debian.org/security/2017/dsa-3960 | vendor-advisoryx_refsource_DEBIAN |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_CONFIRM |
| https://www.debian.org/security/2017/dsa-3901 | vendor-advisoryx_refsource_DEBIAN |
| https://usn.ubuntu.com/3733-2/ | vendor-advisoryx_refsource_UBUNTU |
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CVE-2018-0495 (GCVE-0-2018-0495)
Vulnerability from cvelistv5 – Published: 2018-06-13 23:00 – Updated: 2024-08-05 03:28
VLAI
Summary
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 allows a memory-cache side-channel attack on ECDSA signatures that can be mitigated through the use of blinding during the signing process in the _gcry_ecc_ecdsa_sign function in cipher/ecc-ecdsa.c, aka the Return Of the Hidden Number Problem or ROHNP. To discover an ECDSA key, the attacker needs access to either the local machine or a different virtual machine on the same physical host.
Severity
No CVSS data available.
CWE
- side-channel attack
Assigner
References
21 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Libgcrypt before 1.7.10 and 1.8.x before 1.8.3 |
Affected:
Libgcrypt before 1.7.10 and 1.8.x before 1.8.3
|
Date Public
2018-06-13 00:00
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CVE-2018-6829 (GCVE-0-2018-6829)
Vulnerability from cvelistv5 – Published: 2018-02-07 23:00 – Updated: 2024-08-05 06:17
VLAI
Summary
cipher/elgamal.c in Libgcrypt through 1.8.2, when used to encrypt messages directly, improperly encodes plaintexts, which allows attackers to obtain sensitive information by reading ciphertext data (i.e., it does not have semantic security in face of a ciphertext-only attack). The Decisional Diffie-Hellman (DDH) assumption does not hold for Libgcrypt's ElGamal implementation.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/weikengchen/attack-on-libgcryp… | x_refsource_MISC |
| https://lists.gnupg.org/pipermail/gcrypt-devel/20… | x_refsource_MISC |
| https://github.com/weikengchen/attack-on-libgcryp… | x_refsource_MISC |
| https://www.oracle.com/security-alerts/cpujan2020.html | x_refsource_MISC |
Date Public
2018-02-07 00:00
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CVE-2017-0379 (GCVE-0-2017-0379)
Vulnerability from cvelistv5 – Published: 2017-08-29 22:00 – Updated: 2024-08-05 13:03
VLAI
Summary
Libgcrypt before 1.8.1 does not properly consider Curve25519 side-channel attacks, which makes it easier for attackers to discover a secret key, related to cipher/ecc.c and mpi/ec.c.
Severity
No CVSS data available.
CWE
- local side-channel attack
Assigner
References
11 references
| URL | Tags |
|---|---|
| http://www.securityfocus.com/bid/100503 | vdb-entryx_refsource_BID |
| http://www.oracle.com/technetwork/security-adviso… | x_refsource_CONFIRM |
| https://www.oracle.com/technetwork/security-advis… | x_refsource_CONFIRM |
| http://www.securitytracker.com/id/1041294 | vdb-entryx_refsource_SECTRACK |
| https://www.debian.org/security/2017/dsa-3959 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-security-announce… | x_refsource_MISC |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_MISC |
| https://eprint.iacr.org/2017/806 | x_refsource_MISC |
| https://security-tracker.debian.org/tracker/CVE-2… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2018072… | x_refsource_CONFIRM |
| https://bugs.debian.org/873383 | x_refsource_MISC |
Date Public
2017-08-29 00:00
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CVE-2017-9526 (GCVE-0-2017-9526)
Vulnerability from cvelistv5 – Published: 2017-06-11 02:00 – Updated: 2024-08-05 17:11
VLAI
Summary
In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
7 references
| URL | Tags |
|---|---|
| http://www.oracle.com/technetwork/security-adviso… | x_refsource_CONFIRM |
| https://www.oracle.com/technetwork/security-advis… | x_refsource_CONFIRM |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_CONFIRM |
| http://www.debian.org/security/2017/dsa-3880 | vendor-advisoryx_refsource_DEBIAN |
| http://www.securityfocus.com/bid/99046 | vdb-entryx_refsource_BID |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_CONFIRM |
| https://bugzilla.suse.com/show_bug.cgi?id=1042326 | x_refsource_CONFIRM |
Date Public
2017-06-10 00:00
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CVE-2016-6313 (GCVE-0-2016-6313)
Vulnerability from cvelistv5 – Published: 2016-12-13 20:00 – Updated: 2024-08-06 01:29
VLAI
Summary
The mixing functions in the random number generator in Libgcrypt before 1.5.6, 1.6.x before 1.6.6, and 1.7.x before 1.7.3 and GnuPG before 1.4.21 make it easier for attackers to obtain the values of 160 bits by leveraging knowledge of the previous 4640 bits.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
11 references
| URL | Tags |
|---|---|
| http://www.debian.org/security/2016/dsa-3650 | vendor-advisoryx_refsource_DEBIAN |
| https://security.gentoo.org/glsa/201612-01 | vendor-advisoryx_refsource_GENTOO |
| http://www.ubuntu.com/usn/USN-3064-1 | vendor-advisoryx_refsource_UBUNTU |
| http://www.debian.org/security/2016/dsa-3649 | vendor-advisoryx_refsource_DEBIAN |
| https://security.gentoo.org/glsa/201610-04 | vendor-advisoryx_refsource_GENTOO |
| http://www.securitytracker.com/id/1036635 | vdb-entryx_refsource_SECTRACK |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | mailing-listx_refsource_MLIST |
| https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcr… | x_refsource_CONFIRM |
| http://rhn.redhat.com/errata/RHSA-2016-2674.html | vendor-advisoryx_refsource_REDHAT |
| http://www.securityfocus.com/bid/92527 | vdb-entryx_refsource_BID |
| http://www.ubuntu.com/usn/USN-3065-1 | vendor-advisoryx_refsource_UBUNTU |
Date Public
2016-08-17 00:00
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CVE-2015-7511 (GCVE-0-2015-7511)
Vulnerability from cvelistv5 – Published: 2016-04-19 21:00 – Updated: 2024-08-06 07:51
VLAI
Summary
Libgcrypt before 1.6.5 does not properly perform elliptic-point curve multiplication during decryption, which makes it easier for physically proximate attackers to extract ECDH keys by measuring electromagnetic emanations.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
9 references
| URL | Tags |
|---|---|
| http://www.debian.org/security/2016/dsa-3478 | vendor-advisoryx_refsource_DEBIAN |
| http://www.ubuntu.com/usn/USN-2896-1 | vendor-advisoryx_refsource_UBUNTU |
| https://security.gentoo.org/glsa/201610-04 | vendor-advisoryx_refsource_GENTOO |
| https://lists.gnupg.org/pipermail/gnupg-announce/… | mailing-listx_refsource_MLIST |
| http://www.debian.org/security/2016/dsa-3474 | vendor-advisoryx_refsource_DEBIAN |
| http://www.securityfocus.com/bid/83253 | vdb-entryx_refsource_BID |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| http://lists.opensuse.org/opensuse-updates/2016-0… | vendor-advisoryx_refsource_SUSE |
| http://www.cs.tau.ac.IL/~tromer/ecdh/ | x_refsource_MISC |
Date Public
2016-02-09 00:00
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