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MediumFix available

NULL pointer deref in signature_algorithms processing

Type: advisorySources: OSV

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

Products
node
Affected versions
Not specified
Fixed versions
10.12.1, 10.24.1, 12.12.1, 12.22.1, 14.14.1, 14.16.1, 15.14.0
CVEs
CVE-2021-3449
Confirmed fixed CVEs
Not specified
Updated in this feed
30 Oct 2026, 19:52 UTC · Revision 1

Source evidence

NULL pointer deref in signature_algorithms processing

core-osv · Original source

Published 6 Mar 2024, 11:05 UTC

An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).

osv:BIT-node-2021-3449

node

Fixed versions: 10.12.1, 10.24.1, 12.12.1, 12.22.1, 14.14.1, 14.16.1, 15.14.0

Complete source record
{
  "id": "d34d7f7633f98a2a5a9ff95dd1a846b4cd728de2710f40e47df329062dd44379",
  "url": "https://osv.dev/vulnerability/BIT-node-2021-3449",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "NULL pointer deref in signature_algorithms processing",
    "summary": "An OpenSSL TLS server may crash if sent a maliciously crafted renegotiation ClientHello message from a client. If a TLSv1.2 renegotiation ClientHello omits the signature_algorithms extension (where it was present in the initial ClientHello), but includes a signature_algorithms_cert extension then a NULL pointer dereference will result, leading to a crash and a denial of service attack. A server is only vulnerable if it has TLSv1.2 and renegotiation enabled (which is the default configuration). OpenSSL TLS clients are not impacted by this issue. All OpenSSL 1.1.1 versions are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1-1.1.1j).",
    "evidence": "osv:BIT-node-2021-3449",
    "products": [
      {
        "name": {
          "value": "node",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "10.12.1",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "10.24.1",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "12.12.1",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "12.22.1",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "14.14.1",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "14.16.1",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "15.14.0",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "BIT-node-2021-3449",
      "aliases": [
        "BIT-node-2021-3449",
        "BIT-node-min-2021-3449",
        "CVE-2021-3449",
        "GHSA-83mx-573x-5rw9",
        "RUSTSEC-2021-0055"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "10.0.0"
                },
                {
                  "fixed": "10.12.1"
                },
                {
                  "introduced": "10.13.0"
                },
                {
                  "fixed": "10.24.1"
                },
                {
                  "introduced": "12.0.0"
                },
                {
                  "fixed": "12.12.1"
                },
                {
                  "introduced": "12.13.0"
                },
                {
                  "fixed": "12.22.1"
                },
                {
                  "introduced": "14.0.0"
                },
                {
                  "fixed": "14.14.1"
                },
                {
                  "introduced": "14.15.0"
                },
                {
                  "fixed": "14.16.1"
                },
                {
                  "introduced": "15.0.0"
                },
                {
                  "fixed": "15.14.0"
                }
              ]
            }
          ],
          "package": {
            "name": "node",
            "purl": "pkg:bitnami/node",
            "ecosystem": "Bitnami"
          },
          "severity": [
            {
              "type": "CVSS_V3",
              "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H"
            }
          ],
          "database_specific": {
            "source": "https://github.com/bitnami/vulndb/tree/main/data/node/BIT-node-2021-3449.json"
          }
        }
      ],
      "modified": "2026-10-16T09:45:20.662199404Z",
      "provider": "osv",
      "references": [
        "https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=fb9fa6b51defd48157eeb207f52181f735d96148",
        "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845",
        "https://kc.mcafee.com/corporate/index?page=content&id=SB10356",
        "https://lists.debian.org/debian-lts-announce/2021/08/msg00029.html",
        "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCBFLLVQVILIVGZMBJL3IXZGKWQISYNP/",
        "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013",
        "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc",
        "https://security.gentoo.org/glsa/202103-03",
        "https://security.netapp.com/advisory/ntap-20210326-0006/",
        "https://security.netapp.com/advisory/ntap-20210513-0002/",
        "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd",
        "https://www.debian.org/security/2021/dsa-4875",
        "https://www.openssl.org/news/secadv/20210325.txt",
        "https://www.oracle.com//security-alerts/cpujul2021.html",
        "https://www.oracle.com/security-alerts/cpuApr2021.html",
        "https://www.oracle.com/security-alerts/cpuapr2022.html",
        "https://www.oracle.com/security-alerts/cpujul2022.html",
        "https://www.oracle.com/security-alerts/cpuoct2021.html",
        "https://www.tenable.com/security/tns-2021-05",
        "https://www.tenable.com/security/tns-2021-06",
        "https://www.tenable.com/security/tns-2021-09",
        "https://www.tenable.com/security/tns-2021-10",
        "https://security.netapp.com/advisory/ntap-20240621-0006/",
        "https://nvd.nist.gov/vuln/detail/CVE-2021-3449"
      ],
      "provider_metadata": {
        "cpes": [
          "cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*",
          "cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*"
        ],
        "severity": "Medium"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-3449",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 338391,
  "published_at": "2024-03-06T11:05:44.892+00:00"
}