github - ghsa-hvc4-mjv4-5mw6

ghsa-hvc4-mjv4-5mw6

Vulnerability from github

Published

2024-04-25 09:32

Modified

2024-11-01 18:31

Severity ?

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

Details

Issue summary: Checking excessively long invalid RSA public keys may take a long time.

Impact summary: Applications that use the function EVP_PKEY_public_check() to check RSA public keys may experience long delays. Where the key that is being checked has been obtained from an untrusted source this may lead to a Denial of Service.

When function EVP_PKEY_public_check() is called on RSA public keys, a computation is done to confirm that the RSA modulus, n, is composite. For valid RSA keys, n is a product of two or more large primes and this computation completes quickly. However, if n is an overly large prime, then this computation would take a long time.

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

The function EVP_PKEY_public_check() is not called from other OpenSSL functions however it is called from the OpenSSL pkey command line application. For that reason that application is also vulnerable if used with the '-pubin' and '-check' options on untrusted data.

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-2023-6237",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-606",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-04-25T07:15:45Z",
      severity: "MODERATE",
   },
   details: "Issue summary: Checking excessively long invalid RSA public keys may take\na long time.\n\nImpact summary: Applications that use the function EVP_PKEY_public_check()\nto check RSA public keys may experience long delays. Where the key that\nis being checked has been obtained from an untrusted source this may lead\nto a Denial of Service.\n\nWhen function EVP_PKEY_public_check() is called on RSA public keys,\na computation is done to confirm that the RSA modulus, n, is composite.\nFor valid RSA keys, n is a product of two or more large primes and this\ncomputation completes quickly. However, if n is an overly large prime,\nthen this computation would take a long time.\n\nAn application that calls EVP_PKEY_public_check() and supplies an RSA key\nobtained from an untrusted source could be vulnerable to a Denial of Service\nattack.\n\nThe function EVP_PKEY_public_check() is not called from other OpenSSL\nfunctions however it is called from the OpenSSL pkey command line\napplication. For that reason that application is also vulnerable if used\nwith the '-pubin' and '-check' options on untrusted data.\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-hvc4-mjv4-5mw6",
   modified: "2024-11-01T18:31:25Z",
   published: "2024-04-25T09:32:09Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2023-6237",
      },
      {
         type: "WEB",
         url: "https://github.com/openssl/openssl/commit/0b0f7abfb37350794a4b8960fafc292cd5d1b84d",
      },
      {
         type: "WEB",
         url: "https://github.com/openssl/openssl/commit/18c02492138d1eb8b6548cb26e7b625fb2414a2a",
      },
      {
         type: "WEB",
         url: "https://github.com/openssl/openssl/commit/a830f551557d3d66a84bbb18a5b889c640c36294",
      },
      {
         type: "WEB",
         url: "https://security.netapp.com/advisory/ntap-20240531-0007",
      },
      {
         type: "WEB",
         url: "https://www.openssl.org/news/secadv/20240115.txt",
      },
      {
         type: "WEB",
         url: "http://www.openwall.com/lists/oss-security/2024/03/11/1",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
         type: "CVSS_V3",
      },
   ],
}

cve-2023-6237

Vulnerability from cvelistv5

Published

2024-04-25 06:27

Modified

2024-11-01 14:28

Severity ?

Summary

Issue summary: Checking excessively long invalid RSA public keys may take a long time. Impact summary: Applications that use the function EVP_PKEY_public_check() to check RSA public keys may experience long delays. Where the key that is being checked has been obtained from an untrusted source this may lead to a Denial of Service. When function EVP_PKEY_public_check() is called on RSA public keys, a computation is done to confirm that the RSA modulus, n, is composite. For valid RSA keys, n is a product of two or more large primes and this computation completes quickly. However, if n is an overly large prime, then this computation would take a long time. An application that calls EVP_PKEY_public_check() and supplies an RSA key obtained from an untrusted source could be vulnerable to a Denial of Service attack. The function EVP_PKEY_public_check() is not called from other OpenSSL functions however it is called from the OpenSSL pkey command line application. For that reason that application is also vulnerable if used with the '-pubin' and '-check' options on untrusted data. 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.

References

▼	URL	Tags
	https://www.openssl.org/news/secadv/20240115.txt	vendor-advisory
	https://github.com/openssl/openssl/commit/18c02492138d1eb8b6548cb26e7b625fb2414a2a	patch
	https://github.com/openssl/openssl/commit/a830f551557d3d66a84bbb18a5b889c640c36294	patch
	https://github.com/openssl/openssl/commit/0b0f7abfb37350794a4b8960fafc292cd5d1b84d	patch

Impacted products

	Vendor	Product	Version
	OpenSSL	OpenSSL	Version: 3.0.0 ≤ Version: 3.1.0 ≤ Version: 3.2.0 ≤

Show details on NVD website

JSON

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All sightings related to this event Export sightings related to this event

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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