rustsec-2020-0015
Vulnerability from osv_rustsec
Published
2020-04-25 12:00
Modified
2023-06-13 13:10
Summary
Crash causing Denial of Service attack
Details

Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 handshake may crash due to a NULL pointer dereference as a result of incorrect handling of the "signature_algorithms_cert" TLS extension. The crash occurs if an invalid or unrecognised signature algorithm is received from the peer. This could be exploited by a malicious peer in a Denial of Service attack.

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{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "denial-of-service"
        ],
        "cvss": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "openssl-src",
        "purl": "pkg:cargo/openssl-src"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "111.6.0"
            },
            {
              "fixed": "111.9.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "CVE-2020-1967",
    "GHSA-jq65-29v4-4x35"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "Server or client applications that call the SSL_check_chain() function during or after a TLS 1.3 \nhandshake may crash due to a NULL pointer dereference as a result of incorrect handling of the \n\"signature_algorithms_cert\" TLS extension. The crash occurs if an invalid or unrecognised signature \nalgorithm is received from the peer. This could be exploited by a malicious peer in a Denial of \nService attack.",
  "id": "RUSTSEC-2020-0015",
  "modified": "2023-06-13T13:10:24Z",
  "published": "2020-04-25T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/openssl-src"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2020-0015.html"
    },
    {
      "type": "WEB",
      "url": "https://www.openssl.org/news/secadv/20200421.txt"
    }
  ],
  "related": [],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Crash causing Denial of Service attack"
}


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



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