github - ghsa-85xr-ghj6-6m46

ghsa-85xr-ghj6-6m46

Vulnerability from github

Published

2024-05-16 18:30

Modified

2024-08-13 18:31

Severity ?

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

Details

Issue summary: Checking excessively long DSA keys or parameters may be very slow.

Impact summary: Applications that use the functions EVP_PKEY_param_check() or EVP_PKEY_public_check() to check a DSA public key or DSA parameters may experience long delays. Where the key or parameters that are being checked have been obtained from an untrusted source this may lead to a Denial of Service.

The functions EVP_PKEY_param_check() or EVP_PKEY_public_check() perform various checks on DSA parameters. Some of those computations take a long time if the modulus (p parameter) is too large.

Trying to use a very large modulus is slow and OpenSSL will not allow using public keys with a modulus which is over 10,000 bits in length for signature verification. However the key and parameter check functions do not limit the modulus size when performing the checks.

An application that calls EVP_PKEY_param_check() or EVP_PKEY_public_check() and supplies a key or parameters obtained from an untrusted source could be vulnerable to a Denial of Service attack.

These functions are not called by OpenSSL itself on untrusted DSA keys so only applications that directly call these functions may be vulnerable.

Also vulnerable are the OpenSSL pkey and pkeyparam command line applications when using the -check option.

The OpenSSL SSL/TLS implementation is not affected by this issue.

The OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue.

Show details on source website

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{
  "affected": [],
  "aliases": [
    "CVE-2024-4603"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-606",
      "CWE-834"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-05-16T16:15:10Z",
    "severity": "MODERATE"
  },
  "details": "Issue summary: Checking excessively long DSA keys or parameters may be very\nslow.\n\nImpact summary: Applications that use the functions EVP_PKEY_param_check()\nor EVP_PKEY_public_check() to check a DSA public key or DSA parameters may\nexperience long delays. Where the key or parameters that are being checked\nhave been obtained from an untrusted source this may lead to a Denial of\nService.\n\nThe functions EVP_PKEY_param_check() or EVP_PKEY_public_check() perform\nvarious checks on DSA parameters. Some of those computations take a long time\nif the modulus (`p` parameter) is too large.\n\nTrying to use a very large modulus is slow and OpenSSL will not allow using\npublic keys with a modulus which is over 10,000 bits in length for signature\nverification. However the key and parameter check functions do not limit\nthe modulus size when performing the checks.\n\nAn application that calls EVP_PKEY_param_check() or EVP_PKEY_public_check()\nand supplies a key or parameters obtained from an untrusted source could be\nvulnerable to a Denial of Service attack.\n\nThese functions are not called by OpenSSL itself on untrusted DSA keys so\nonly applications that directly call these functions may be vulnerable.\n\nAlso vulnerable are the OpenSSL pkey and pkeyparam command line applications\nwhen using the `-check` option.\n\nThe OpenSSL SSL/TLS implementation is not affected by this issue.\n\nThe OpenSSL 3.0 and 3.1 FIPS providers are affected by this issue.",
  "id": "GHSA-85xr-ghj6-6m46",
  "modified": "2024-08-13T18:31:13Z",
  "published": "2024-05-16T18:30:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-4603"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/3559e868e58005d15c6013a0c1fd832e51c73397"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/53ea06486d296b890d565fb971b2764fcd826e7e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/9c39b3858091c152f52513c066ff2c5a47969f0d"
    },
    {
      "type": "WEB",
      "url": "https://github.com/openssl/openssl/commit/da343d0605c826ef197aceedc67e8e04f065f740"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20240621-0001"
    },
    {
      "type": "WEB",
      "url": "https://www.openssl.org/news/secadv/20240516.txt"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2024/05/16/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

cve-2024-4603

Vulnerability from cvelistv5

Published

2024-05-16 15:21

Modified

2024-10-14 14:56

Severity ?

Summary

Excessive time spent checking DSA keys and parameters

References

▼	URL	Tags
	https://www.openssl.org/news/secadv/20240516.txt	vendor-advisory
	https://github.com/openssl/openssl/commit/3559e868e58005d15c6013a0c1fd832e51c73397	patch
	https://github.com/openssl/openssl/commit/9c39b3858091c152f52513c066ff2c5a47969f0d	patch
	https://github.com/openssl/openssl/commit/da343d0605c826ef197aceedc67e8e04f065f740	patch
	https://github.com/openssl/openssl/commit/53ea06486d296b890d565fb971b2764fcd826e7e	patch

Impacted products

▼	Vendor	Product
	OpenSSL	OpenSSL

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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