github - ghsa-q764-r57m-9wp9

ghsa-q764-r57m-9wp9

Vulnerability from github

Published

2024-10-16 18:31

Modified

2024-11-08 18:30

Severity ?

4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Details

Issue summary: Use of the low-level GF(2^m) elliptic curve APIs with untrusted explicit values for the field polynomial can lead to out-of-bounds memory reads or writes.

Impact summary: Out of bound memory writes can lead to an application crash or even a possibility of a remote code execution, however, in all the protocols involving Elliptic Curve Cryptography that we're aware of, either only "named curves" are supported, or, if explicit curve parameters are supported, they specify an X9.62 encoding of binary (GF(2^m)) curves that can't represent problematic input values. Thus the likelihood of existence of a vulnerable application is low.

In particular, the X9.62 encoding is used for ECC keys in X.509 certificates, so problematic inputs cannot occur in the context of processing X.509 certificates. Any problematic use-cases would have to be using an "exotic" curve encoding.

The affected APIs include: EC_GROUP_new_curve_GF2m(), EC_GROUP_new_from_params(), and various supporting BN_GF2m_*() functions.

Applications working with "exotic" explicit binary (GF(2^m)) curve parameters, that make it possible to represent invalid field polynomials with a zero constant term, via the above or similar APIs, may terminate abruptly as a result of reading or writing outside of array bounds. Remote code execution cannot easily be ruled out.

The FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.

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{
  "affected": [],
  "aliases": [
    "CVE-2024-9143"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-16T17:15:18Z",
    "severity": "MODERATE"
  },
  "details": "Issue summary: Use of the low-level GF(2^m) elliptic curve APIs with untrusted\nexplicit values for the field polynomial can lead to out-of-bounds memory reads\nor writes.\n\nImpact summary: Out of bound memory writes can lead to an application crash or\neven a possibility of a remote code execution, however, in all the protocols\ninvolving Elliptic Curve Cryptography that we\u0027re aware of, either only \"named\ncurves\" are supported, or, if explicit curve parameters are supported, they\nspecify an X9.62 encoding of binary (GF(2^m)) curves that can\u0027t represent\nproblematic input values. Thus the likelihood of existence of a vulnerable\napplication is low.\n\nIn particular, the X9.62 encoding is used for ECC keys in X.509 certificates,\nso problematic inputs cannot occur in the context of processing X.509\ncertificates.  Any problematic use-cases would have to be using an \"exotic\"\ncurve encoding.\n\nThe affected APIs include: EC_GROUP_new_curve_GF2m(), EC_GROUP_new_from_params(),\nand various supporting BN_GF2m_*() functions.\n\nApplications working with \"exotic\" explicit binary (GF(2^m)) curve parameters,\nthat make it possible to represent invalid field polynomials with a zero\nconstant term, via the above or similar APIs, may terminate abruptly as a\nresult of reading or writing outside of array bounds.  Remote code execution\ncannot easily be ruled out.\n\nThe FIPS modules in 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.",
  "id": "GHSA-q764-r57m-9wp9",
  "modified": "2024-11-08T18:30:44Z",
  "published": "2024-10-16T18:31:47Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-9143"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/72ae83ad214d2eef262461365a1975707f862712"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/bc7e04d7c8d509fb78fc0e285aa948fb0da04700"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/c0d3e4d32d2805f49bec30547f225bc4d092e1f4"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/fdf6723362ca51bd883295efe206cb5b1cfa5154"
    },
    {
      "type": "WEB",
      "url": "https://github.openssl.org/openssl/extended-releases/commit/8efc0cbaa8ebba8e116f7b81a876a4123594d86a"
    },
    {
      "type": "WEB",
      "url": "https://github.openssl.org/openssl/extended-releases/commit/9d576994cec2b7aa37a91740ea7e680810957e41"
    },
    {
      "type": "WEB",
      "url": "https://openssl-library.org/news/secadv/20241016.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

cve-2024-9143

Vulnerability from cvelistv5

Published

2024-10-16 17:09

Modified

2024-11-08 15:30

Severity ?

Summary

Low-level invalid GF(2^m) parameters lead to OOB memory access

References

▼	URL	Tags
	https://openssl-library.org/news/secadv/20241016.txt	vendor-advisory
	https://github.com/openssl/openssl/commit/c0d3e4d32d2805f49bec30547f225bc4d092e1f4	patch
	https://github.com/openssl/openssl/commit/bc7e04d7c8d509fb78fc0e285aa948fb0da04700	patch
	https://github.com/openssl/openssl/commit/fdf6723362ca51bd883295efe206cb5b1cfa5154	patch
	https://github.com/openssl/openssl/commit/72ae83ad214d2eef262461365a1975707f862712	patch
	https://github.openssl.org/openssl/extended-releases/commit/8efc0cbaa8ebba8e116f7b81a876a4123594d86a	patch
	https://github.openssl.org/openssl/extended-releases/commit/9d576994cec2b7aa37a91740ea7e680810957e41	patch

Impacted products

Vendor

Product

Version

▼

OpenSSL

Version: 3.3.0   ≤
Version: 3.2.0   ≤
Version: 3.1.0   ≤
Version: 3.0.0   ≤
Version: 1.1.1   < 1.1.1zb
Version: 1.0.2   < 1.0.2zl

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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