CVE-2024-12797 (GCVE-0-2024-12797)

Vulnerability from cvelistv5 – Published: 2025-02-11 15:59 – Updated: 2025-02-18 14:01
VLAI
Title
RFC7250 handshakes with unauthenticated servers don't abort as expected
Summary
Issue summary: Clients using RFC7250 Raw Public Keys (RPKs) to authenticate a server may fail to notice that the server was not authenticated, because handshakes don't abort as expected when the SSL_VERIFY_PEER verification mode is set. Impact summary: TLS and DTLS connections using raw public keys may be vulnerable to man-in-middle attacks when server authentication failure is not detected by clients. RPKs are disabled by default in both TLS clients and TLS servers. The issue only arises when TLS clients explicitly enable RPK use by the server, and the server, likewise, enables sending of an RPK instead of an X.509 certificate chain. The affected clients are those that then rely on the handshake to fail when the server's RPK fails to match one of the expected public keys, by setting the verification mode to SSL_VERIFY_PEER. Clients that enable server-side raw public keys can still find out that raw public key verification failed by calling SSL_get_verify_result(), and those that do, and take appropriate action, are not affected. This issue was introduced in the initial implementation of RPK support in OpenSSL 3.2. The FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue.
Severity
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-14 20:24 UTC
CWE
  • CWE-392 - Missing Report of Error Condition
Assigner
References
Impacted products
Vendor Product Version CPE status
OpenSSL OpenSSL Affected: 3.4.0 , < 3.4.1 (semver)
Affected: 3.3.0 , < 3.3.3 (semver)
Affected: 3.2.0 , < 3.2.4 (semver)
guessed Create a notification for this product.
Date Public
2025-02-11 14:00
Credits
Apple Inc. Viktor Dukhovni
Show details on NVD website
To clipboard 

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                  "value": "Issue summary: Clients using RFC7250 Raw Public Keys (RPKs) to authenticate a\u003cbr\u003eserver may fail to notice that the server was not authenticated, because\u003cbr\u003ehandshakes don\u0027t abort as expected when the SSL_VERIFY_PEER verification mode\u003cbr\u003eis set.\u003cbr\u003e\u003cbr\u003eImpact summary: TLS and DTLS connections using raw public keys may be\u003cbr\u003evulnerable to man-in-middle attacks when server authentication failure is not\u003cbr\u003edetected by clients.\u003cbr\u003e\u003cbr\u003eRPKs are disabled by default in both TLS clients and TLS servers.  The issue\u003cbr\u003eonly arises when TLS clients explicitly enable RPK use by the server, and the\u003cbr\u003eserver, likewise, enables sending of an RPK instead of an X.509 certificate\u003cbr\u003echain.  The affected clients are those that then rely on the handshake to\u003cbr\u003efail when the server\u0027s RPK fails to match one of the expected public keys,\u003cbr\u003eby setting the verification mode to SSL_VERIFY_PEER.\u003cbr\u003e\u003cbr\u003eClients that enable server-side raw public keys can still find out that raw\u003cbr\u003epublic key verification failed by calling SSL_get_verify_result(), and those\u003cbr\u003ethat do, and take appropriate action, are not affected.  This issue was\u003cbr\u003eintroduced in the initial implementation of RPK support in OpenSSL 3.2.\u003cbr\u003e\u003cbr\u003eThe FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue."
                }
              ],
              "value": "Issue summary: Clients using RFC7250 Raw Public Keys (RPKs) to authenticate a\nserver may fail to notice that the server was not authenticated, because\nhandshakes don\u0027t abort as expected when the SSL_VERIFY_PEER verification mode\nis set.\n\nImpact summary: TLS and DTLS connections using raw public keys may be\nvulnerable to man-in-middle attacks when server authentication failure is not\ndetected by clients.\n\nRPKs are disabled by default in both TLS clients and TLS servers.  The issue\nonly arises when TLS clients explicitly enable RPK use by the server, and the\nserver, likewise, enables sending of an RPK instead of an X.509 certificate\nchain.  The affected clients are those that then rely on the handshake to\nfail when the server\u0027s RPK fails to match one of the expected public keys,\nby setting the verification mode to SSL_VERIFY_PEER.\n\nClients that enable server-side raw public keys can still find out that raw\npublic key verification failed by calling SSL_get_verify_result(), and those\nthat do, and take appropriate action, are not affected.  This issue was\nintroduced in the initial implementation of RPK support in OpenSSL 3.2.\n\nThe FIPS modules in 3.4, 3.3, 3.2, 3.1 and 3.0 are not affected by this issue."
            }
          ],
          "metrics": [
            {
              "format": "other",
              "other": {
                "content": {
                  "text": "High"
                },
                "type": "https://openssl-library.org/policies/general/security-policy/"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-392",
                  "description": "CWE-392 Missing Report of Error Condition",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-02-11T15:59:36.719Z",
            "orgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
            "shortName": "openssl"
          },
          "references": [
            {
              "name": "OpenSSL Advisory",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://openssl-library.org/news/secadv/20250211.txt"
            },
            {
              "name": "3.4.1 git commit",
              "tags": [
                "patch"
              ],
              "url": "https://github.com/openssl/openssl/commit/738d4f9fdeaad57660dcba50a619fafced3fd5e9"
            },
            {
              "name": "3.3.3 git commit",
              "tags": [
                "patch"
              ],
              "url": "https://github.com/openssl/openssl/commit/87ebd203feffcf92ad5889df92f90bb0ee10a699"
            },
            {
              "name": "3.2.4 git commit",
              "tags": [
                "patch"
              ],
              "url": "https://github.com/openssl/openssl/commit/798779d43494549b611233f92652f0da5328fbe7"
            }
          ],
          "source": {
            "discovery": "UNKNOWN"
          },
          "title": "RFC7250 handshakes with unauthenticated servers don\u0027t abort as expected",
          "x_generator": {
            "engine": "Vulnogram 0.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
        "assignerShortName": "openssl",
        "cveId": "CVE-2024-12797",
        "datePublished": "2025-02-11T15:59:36.719Z",
        "dateReserved": "2024-12-19T13:54:37.212Z",
        "dateUpdated": "2025-02-18T14:01:55.140Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.