CWE-327
Allowed-with-ReviewUse of a Broken or Risky Cryptographic Algorithm
Abstraction: Class · Status: Draft
The product uses a broken or risky cryptographic algorithm or protocol.
963 vulnerabilities reference this CWE, most recent first.
CVE-2013-20003 (GCVE-0-2013-20003)
Vulnerability from cvelistv5 – Published: 2022-02-04 22:33 – Updated: 2024-09-16 22:10- CWE-327 - Use of a Broken or Risky Cryptographic Algorithm
| URL | Tags |
|---|---|
| https://sensepost.com/cms/resources/conferences/2… | x_refsource_MISC |
| https://www.pentestpartners.com/security-blog/z-s… | x_refsource_MISC |
| https://orangecyberdefense.com/global/blog/sensep… | x_refsource_MISC |
| Vendor | Product | Version | |
|---|---|---|---|
| Silicon Labs | Z-Wave |
Affected:
S0
|
|
| Sierra Designs | Z-Wave |
Affected:
S0 , < S0
(custom)
|
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GHSA-22QF-W2WM-5686
Vulnerability from github – Published: 2022-05-24 17:24 – Updated: 2022-05-24 17:24This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the encryption of firmware update images. The issue results from the use of an inappropriate encryption algorithm. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9649.
{
"affected": [],
"aliases": [
"CVE-2020-10927"
],
"database_specific": {
"cwe_ids": [
"CWE-327"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2020-07-28T18:15:00Z",
"severity": "HIGH"
},
"details": "This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the encryption of firmware update images. The issue results from the use of an inappropriate encryption algorithm. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9649.",
"id": "GHSA-22qf-w2wm-5686",
"modified": "2022-05-24T17:24:23Z",
"published": "2022-05-24T17:24:23Z",
"references": [
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"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2020-10927"
},
{
"type": "WEB",
"url": "https://www.zerodayinitiative.com/advisories/ZDI-20-707"
}
],
"schema_version": "1.4.0",
"severity": []
}
GHSA-23CM-X6J7-6HQ3
Vulnerability from github – Published: 2021-09-14 20:24 – Updated: 2023-08-08 19:58Impact
A logic error in the room key sharing functionality of matrix-js-sdk before 12.4.1 allows a malicious Matrix homeserver† participating in an encrypted room to steal room encryption keys from affected Matrix clients participating in that room. This allows the homeserver to decrypt end-to-end encrypted messages sent by affected clients.
† Or anyone with access to the account of the original recipient of an encrypted message.
Known clients affected (via their use of vulnerable versions of matrix-js-sdk):
- Element Web (1.8.2 and earlier)
- Element Desktop (1.8.2 and earlier)
- SchildiChat Web (1.7.32-sc1 and earlier)
- SchildiChat Desktop (1.7.32-sc1 and earlier)
- Cinny (1.2.0 and earlier)
Patch
This was fixed in https://github.com/matrix-org/matrix-js-sdk/commit/894c24880da0e1cc81818f51c0db80e3c9fb2be9.
Workarounds
To prevent a homeserver from being able to steal the room keys, vulnerable clients can be taken offline or signed out. If signing out, care should be taken to either set up Secure Backup or export E2E room keys in order to preserve access to past messages.
{
"affected": [
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],
"database_specific": {
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"CWE-200",
"CWE-327"
],
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"nvd_published_at": "2021-09-13T19:15:00Z",
"severity": "MODERATE"
},
"details": "### Impact\n\nA logic error in the room key sharing functionality of matrix-js-sdk before 12.4.1 allows a malicious Matrix homeserver\u2020 participating in an encrypted room to steal room encryption keys from affected Matrix clients participating in that room. This allows the homeserver to decrypt end-to-end encrypted messages sent by affected clients.\n\n\u2020 Or anyone with access to the account of the original recipient of an encrypted message.\n\nKnown clients affected (via their use of vulnerable versions of matrix-js-sdk):\n\n- Element Web (1.8.2 and earlier)\n- Element Desktop (1.8.2 and earlier)\n- SchildiChat Web (1.7.32-sc1 and earlier)\n- SchildiChat Desktop (1.7.32-sc1 and earlier)\n- Cinny (1.2.0 and earlier)\n\n### Patch\n\nThis was fixed in https://github.com/matrix-org/matrix-js-sdk/commit/894c24880da0e1cc81818f51c0db80e3c9fb2be9.\n\n### Workarounds\nTo prevent a homeserver from being able to steal the room keys, vulnerable clients can be taken offline or signed out. If signing out, care should be taken to either set up Secure Backup or export E2E room keys in order to preserve access to past messages.",
"id": "GHSA-23cm-x6j7-6hq3",
"modified": "2023-08-08T19:58:08Z",
"published": "2021-09-14T20:24:18Z",
"references": [
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"type": "WEB",
"url": "https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-23cm-x6j7-6hq3"
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{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-40823"
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"url": "https://github.com/matrix-org/matrix-js-sdk/commit/894c24880da0e1cc81818f51c0db80e3c9fb2be9"
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"url": "https://github.com/matrix-org/matrix-js-sdk"
},
{
"type": "WEB",
"url": "https://github.com/matrix-org/matrix-js-sdk/releases/tag/v12.4.1"
},
{
"type": "WEB",
"url": "https://matrix.org/blog/2021/09/13/vulnerability-disclosure-key-sharing"
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"severity": [
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"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "matrix-js-sdk can be tricked into disclosing E2EE room keys to a participating homeserver"
}
GHSA-23G5-CWWR-8XHW
Vulnerability from github – Published: 2022-08-26 00:03 – Updated: 2025-11-03 21:30A key length flaw was found in Red Hat Ceph Storage. An attacker can exploit the fact that the key length is incorrectly passed in an encryption algorithm to create a non random key, which is weaker and can be exploited for loss of confidentiality and integrity on encrypted disks.
{
"affected": [],
"aliases": [
"CVE-2021-3979"
],
"database_specific": {
"cwe_ids": [
"CWE-287",
"CWE-327"
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"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-08-25T20:15:00Z",
"severity": "MODERATE"
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"details": "A key length flaw was found in Red Hat Ceph Storage. An attacker can exploit the fact that the key length is incorrectly passed in an encryption algorithm to create a non random key, which is weaker and can be exploited for loss of confidentiality and integrity on encrypted disks.",
"id": "GHSA-23g5-cwwr-8xhw",
"modified": "2025-11-03T21:30:43Z",
"published": "2022-08-26T00:03:29Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3979"
},
{
"type": "WEB",
"url": "https://github.com/ceph/ceph/pull/44765"
},
{
"type": "WEB",
"url": "https://github.com/ceph/ceph/commit/47c33179f9a15ae95cc1579a421be89378602656"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2022:1174"
},
{
"type": "WEB",
"url": "https://access.redhat.com/errata/RHSA-2022:1716"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2021-3979"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2024788"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2023/10/msg00034.html"
},
{
"type": "WEB",
"url": "https://lists.debian.org/debian-lts-announce/2025/09/msg00025.html"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BPOK44BESMIFW6BIOGCN452AKKOIIT6Q"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BPOK44BESMIFW6BIOGCN452AKKOIIT6Q"
},
{
"type": "WEB",
"url": "https://tracker.ceph.com/issues/54006"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-23V6-7R6W-C9X5
Vulnerability from github – Published: 2025-11-20 18:31 – Updated: 2025-11-20 18:31IBM Concert 1.0.0 through 2.0.0 could allow a remote attacker to obtain sensitive information, caused by the failure to properly enable HTTP Strict-Transport-Security. An attacker could exploit this vulnerability to obtain sensitive information using man in the middle techniques.
{
"affected": [],
"aliases": [
"CVE-2025-36161"
],
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"cwe_ids": [
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],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-11-20T16:15:58Z",
"severity": "MODERATE"
},
"details": "IBM Concert 1.0.0 through 2.0.0 could allow a remote attacker to obtain sensitive information, caused by the failure to properly enable HTTP Strict-Transport-Security. An attacker could exploit this vulnerability to obtain sensitive information using man in the middle techniques.",
"id": "GHSA-23v6-7r6w-c9x5",
"modified": "2025-11-20T18:31:00Z",
"published": "2025-11-20T18:31:00Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-36161"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/7252019"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-247V-CG43-R8XG
Vulnerability from github – Published: 2024-06-03 03:31 – Updated: 2024-11-16 00:31In modem, there is a possible information disclosure due to using risky cryptographic algorithm during connection establishment negotiation. This could lead to remote information disclosure, when weak encryption algorithm is used, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY00942482; Issue ID: MSV-1469.
{
"affected": [],
"aliases": [
"CVE-2024-20070"
],
"database_specific": {
"cwe_ids": [
"CWE-327"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-06-03T02:15:09Z",
"severity": "MODERATE"
},
"details": "In modem, there is a possible information disclosure due to using risky cryptographic algorithm during connection establishment negotiation. This could lead to remote information disclosure, when weak encryption algorithm is used, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: MOLY00942482; Issue ID: MSV-1469.",
"id": "GHSA-247v-cg43-r8xg",
"modified": "2024-11-16T00:31:49Z",
"published": "2024-06-03T03:31:04Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-20070"
},
{
"type": "WEB",
"url": "https://corp.mediatek.com/product-security-bulletin/June-2024"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
"type": "CVSS_V3"
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]
}
GHSA-24Q8-66W6-4WQM
Vulnerability from github – Published: 2022-05-24 17:05 – Updated: 2024-04-04 02:46The HTTP Authentication library before 2019-12-27 for Nim has weak password hashing because the default algorithm for libsodium's crypto_pwhash_str is not used.
{
"affected": [],
"aliases": [
"CVE-2019-20138"
],
"database_specific": {
"cwe_ids": [
"CWE-326",
"CWE-327"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-12-30T14:15:00Z",
"severity": "HIGH"
},
"details": "The HTTP Authentication library before 2019-12-27 for Nim has weak password hashing because the default algorithm for libsodium\u0027s crypto_pwhash_str is not used.",
"id": "GHSA-24q8-66w6-4wqm",
"modified": "2024-04-04T02:46:05Z",
"published": "2022-05-24T17:05:21Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-20138"
},
{
"type": "WEB",
"url": "https://github.com/FedericoCeratto/nim-httpauth/commit/15fd0686dc363075c08976ad897d6c92e1e6283c"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-24XW-X4FW-FMCW
Vulnerability from github – Published: 2022-05-24 19:12 – Updated: 2023-02-14 18:30IBM Sterling Secure Proxy 6.0.1, 6.0.2, 2.4.3.2, and 3.4.3.2 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-ForceID: 201100.
{
"affected": [],
"aliases": [
"CVE-2021-29723"
],
"database_specific": {
"cwe_ids": [
"CWE-327"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2021-08-30T17:15:00Z",
"severity": "HIGH"
},
"details": "IBM Sterling Secure Proxy 6.0.1, 6.0.2, 2.4.3.2, and 3.4.3.2 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-ForceID: 201100.",
"id": "GHSA-24xw-x4fw-fmcw",
"modified": "2023-02-14T18:30:21Z",
"published": "2022-05-24T19:12:31Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-29723"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/201100"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/6484681"
},
{
"type": "WEB",
"url": "https://www.ibm.com/support/pages/node/6484685"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-253Q-9Q78-63X4
Vulnerability from github – Published: 2026-01-28 16:21 – Updated: 2026-01-28 16:21Impact
Protocol compliance vulnerability. The library allowed post-quantum handshake patterns that violated the PSK validity rule (Noise Protocol Framework Section 9.3). This could allow PSK-derived keys to be used for encryption without proper randomization by self-chosen ephemeral randomness, weakening security guarantees and potentially allowing catastrophic key reuse.
Affected default patterns include noise_pqkk_psk0, noise_pqkn_psk0, noise_pqnk_psk0, noise_pqnn_psk0, and some hybrid variants. Users of these patterns may have been using handshakes that do not meet the intended security properties.
Patches
The issue is fully patched and released in Clatter v2.2.0. The fixed version includes runtime checks to detect offending handshake patterns.
Workarounds
Avoid using offending *_psk0 variants of post-quantum patterns. Review custom handshake patterns carefully.
Resources
{
"affected": [
{
"package": {
"ecosystem": "crates.io",
"name": "clatter"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.2.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-24785"
],
"database_specific": {
"cwe_ids": [
"CWE-327"
],
"github_reviewed": true,
"github_reviewed_at": "2026-01-28T16:21:03Z",
"nvd_published_at": "2026-01-28T00:15:50Z",
"severity": "HIGH"
},
"details": "### Impact\n\nProtocol compliance vulnerability. The library allowed post-quantum handshake patterns that violated the PSK validity rule (Noise Protocol Framework Section 9.3). This could allow PSK-derived keys to be used for encryption without proper randomization by self-chosen ephemeral randomness, weakening security guarantees and potentially allowing catastrophic key reuse.\n\nAffected default patterns include `noise_pqkk_psk0`, `noise_pqkn_psk0`, `noise_pqnk_psk0`, `noise_pqnn_psk0`, and some hybrid variants. Users of these patterns may have been using handshakes that do not meet the intended security properties.\n\n### Patches\n\nThe issue is fully patched and released in Clatter v2.2.0. The fixed version includes runtime checks to detect offending handshake patterns.\n\n### Workarounds\n\nAvoid using offending `*_psk0` variants of post-quantum patterns. Review custom handshake patterns carefully.\n\n### Resources\n\n* [PSK validity rule](https://noiseprotocol.org/noise.html#validity-rule)",
"id": "GHSA-253q-9q78-63x4",
"modified": "2026-01-28T16:21:03Z",
"published": "2026-01-28T16:21:03Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/jmlepisto/clatter/security/advisories/GHSA-253q-9q78-63x4"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-24785"
},
{
"type": "WEB",
"url": "https://github.com/jmlepisto/clatter/commit/b65ae6e9b8019bed5407771e21f89ddff17c5a71"
},
{
"type": "PACKAGE",
"url": "https://github.com/jmlepisto/clatter"
},
{
"type": "WEB",
"url": "https://noiseprotocol.org/noise.html#validity-rule"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U",
"type": "CVSS_V4"
}
],
"summary": "Clatter has a PSK Validity Rule Violation issue"
}
GHSA-26QG-4HPQ-VWX9
Vulnerability from github – Published: 2022-05-13 01:37 – Updated: 2022-05-13 01:37IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, and 11.1 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 131853.
{
"affected": [],
"aliases": [
"CVE-2017-1571"
],
"database_specific": {
"cwe_ids": [
"CWE-327"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2018-03-22T12:29:00Z",
"severity": "MODERATE"
},
"details": "IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, and 11.1 uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information. IBM X-Force ID: 131853.",
"id": "GHSA-26qg-4hpq-vwx9",
"modified": "2022-05-13T01:37:05Z",
"published": "2022-05-13T01:37:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2017-1571"
},
{
"type": "WEB",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/131853"
},
{
"type": "WEB",
"url": "http://www.ibm.com/support/docview.wss?uid=swg22012948"
},
{
"type": "WEB",
"url": "http://www.securityfocus.com/bid/103494"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
}
]
}
Mitigation MIT-24
Strategy: Libraries or Frameworks
- When there is a need to store or transmit sensitive data, use strong, up-to-date cryptographic algorithms to encrypt that data. Select a well-vetted algorithm that is currently considered to be strong by experts in the field, and use well-tested implementations. As with all cryptographic mechanisms, the source code should be available for analysis.
- For example, US government systems require FIPS 140-2 certification [REF-1192].
- Do not develop custom or private cryptographic algorithms. They will likely be exposed to attacks that are well-understood by cryptographers. Reverse engineering techniques are mature. If the algorithm can be compromised if attackers find out how it works, then it is especially weak.
- Periodically ensure that the cryptography has not become obsolete. Some older algorithms, once thought to require a billion years of computing time, can now be broken in days or hours. This includes MD4, MD5, SHA1, DES, and other algorithms that were once regarded as strong. [REF-267]
Mitigation MIT-52
Ensure that the design allows one cryptographic algorithm to be replaced with another in the next generation or version. Where possible, use wrappers to make the interfaces uniform. This will make it easier to upgrade to stronger algorithms. With hardware, design the product at the Intellectual Property (IP) level so that one cryptographic algorithm can be replaced with another in the next generation of the hardware product.
Mitigation
Carefully manage and protect cryptographic keys (see CWE-320). If the keys can be guessed or stolen, then the strength of the cryptography itself is irrelevant.
Mitigation MIT-4
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
- Industry-standard implementations will save development time and may be more likely to avoid errors that can occur during implementation of cryptographic algorithms. Consider the ESAPI Encryption feature.
Mitigation MIT-25
When using industry-approved techniques, use them correctly. Don't cut corners by skipping resource-intensive steps (CWE-325). These steps are often essential for preventing common attacks.
CAPEC-20: Encryption Brute Forcing
An attacker, armed with the cipher text and the encryption algorithm used, performs an exhaustive (brute force) search on the key space to determine the key that decrypts the cipher text to obtain the plaintext.
CAPEC-459: Creating a Rogue Certification Authority Certificate
An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.
CAPEC-473: Signature Spoof
An attacker generates a message or datablock that causes the recipient to believe that the message or datablock was generated and cryptographically signed by an authoritative or reputable source, misleading a victim or victim operating system into performing malicious actions.
CAPEC-475: Signature Spoofing by Improper Validation
An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.
CAPEC-608: Cryptanalysis of Cellular Encryption
The use of cryptanalytic techniques to derive cryptographic keys or otherwise effectively defeat cellular encryption to reveal traffic content. Some cellular encryption algorithms such as A5/1 and A5/2 (specified for GSM use) are known to be vulnerable to such attacks and commercial tools are available to execute these attacks and decrypt mobile phone conversations in real-time. Newer encryption algorithms in use by UMTS and LTE are stronger and currently believed to be less vulnerable to these types of attacks. Note, however, that an attacker with a Cellular Rogue Base Station can force the use of weak cellular encryption even by newer mobile devices.
CAPEC-614: Rooting SIM Cards
SIM cards are the de facto trust anchor of mobile devices worldwide. The cards protect the mobile identity of subscribers, associate devices with phone numbers, and increasingly store payment credentials, for example in NFC-enabled phones with mobile wallets. This attack leverages over-the-air (OTA) updates deployed via cryptographically-secured SMS messages to deliver executable code to the SIM. By cracking the DES key, an attacker can send properly signed binary SMS messages to a device, which are treated as Java applets and are executed on the SIM. These applets are allowed to send SMS, change voicemail numbers, and query the phone location, among many other predefined functions. These capabilities alone provide plenty of potential for abuse.
CAPEC-97: Cryptanalysis
Cryptanalysis is a process of finding weaknesses in cryptographic algorithms and using these weaknesses to decipher the ciphertext without knowing the secret key (instance deduction). Sometimes the weakness is not in the cryptographic algorithm itself, but rather in how it is applied that makes cryptanalysis successful. An attacker may have other goals as well, such as: Total Break (finding the secret key), Global Deduction (finding a functionally equivalent algorithm for encryption and decryption that does not require knowledge of the secret key), Information Deduction (gaining some information about plaintexts or ciphertexts that was not previously known) and Distinguishing Algorithm (the attacker has the ability to distinguish the output of the encryption (ciphertext) from a random permutation of bits).