Search criteria
30 vulnerabilities found for libgcrypt by GnuPG
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)
CWE
- n/a
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)
CWE
- n/a
Assigner
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
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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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
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
Impacted products
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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
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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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
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| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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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)
CWE
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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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
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| 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
|
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"url": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"
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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
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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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
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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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
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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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
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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
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2014-5270 (GCVE-0-2014-5270)
Vulnerability from nvd – Published: 2014-10-10 01:00 – Updated: 2024-08-06 11:41
VLAI?
Summary
Libgcrypt before 1.5.4, as used in GnuPG and other products, does not properly perform ciphertext normalization and ciphertext randomization, which makes it easier for physically proximate attackers to conduct key-extraction attacks by leveraging the ability to collect voltage data from exposed metal, a different vector than CVE-2013-4576.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2013-4242 (GCVE-0-2013-4242)
Vulnerability from nvd – Published: 2013-08-19 23:00 – Updated: 2024-08-06 16:38
VLAI?
Summary
GnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows local users to obtain private RSA keys via a cache side-channel attack involving the L3 cache, aka Flush+Reload.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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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)
CWE
- n/a
Assigner
References
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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)
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
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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
| URL | Tags | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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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
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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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
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
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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
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||
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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)
CWE
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
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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
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| 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
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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
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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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
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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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
| URL | Tags | ||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||
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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
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
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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
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2014-5270 (GCVE-0-2014-5270)
Vulnerability from cvelistv5 – Published: 2014-10-10 01:00 – Updated: 2024-08-06 11:41
VLAI?
Summary
Libgcrypt before 1.5.4, as used in GnuPG and other products, does not properly perform ciphertext normalization and ciphertext randomization, which makes it easier for physically proximate attackers to conduct key-extraction attacks by leveraging the ability to collect voltage data from exposed metal, a different vector than CVE-2013-4576.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2013-4242 (GCVE-0-2013-4242)
Vulnerability from cvelistv5 – Published: 2013-08-19 23:00 – Updated: 2024-08-06 16:38
VLAI?
Summary
GnuPG before 1.4.14, and Libgcrypt before 1.5.3 as used in GnuPG 2.0.x and possibly other products, allows local users to obtain private RSA keys via a cache side-channel attack involving the L3 cache, aka Flush+Reload.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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