CVE-2022-3602

Published Nov 1, 2022

Last updated a year ago

Insights

Analysis from the Intruder Security Team

Published Oct 15, 2024

The vulnerability that caused mass speculation online was downgraded to High following a secondary review from those involved with the OpenSSL project. This was due to a handful of limitations and modern system protections, which, when combined significantly reduce the likelihood of real world exploitation.

More information is available in our blog post here.

Overview

Description: A buffer overrun can be triggered in X.509 certificate verification, specifically in name constraint checking. Note that this occurs after certificate chain signature verification and requires either a CA to have signed the malicious certificate or for the application to continue certificate verification despite failure to construct a path to a trusted issuer. An attacker can craft a malicious email address to overflow four attacker-controlled bytes on the stack. This buffer overflow could result in a crash (causing a denial of service) or potentially remote code execution. Many platforms implement stack overflow protections which would mitigate against the risk of remote code execution. The risk may be further mitigated based on stack layout for any given platform/compiler. Pre-announcements of CVE-2022-3602 described this issue as CRITICAL. Further analysis based on some of the mitigating factors described above have led this to be downgraded to HIGH. Users are still encouraged to upgrade to a new version as soon as possible. In a TLS client, this can be triggered by connecting to a malicious server. In a TLS server, this can be triggered if the server requests client authentication and a malicious client connects. Fixed in OpenSSL 3.0.7 (Affected 3.0.0,3.0.1,3.0.2,3.0.3,3.0.4,3.0.5,3.0.6).
Source: openssl-security@openssl.org
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 7.5
Impact score: 3.6
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: HIGH

Weaknesses

nvd@nist.gov: CWE-787

Hype score: Not currently trending

Configurations

[
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "BE1F59CA-02F2-4374-A129-18713496B58B",
            "versionEndExcluding": "3.0.7",
            "versionStartIncluding": "3.0.0"
          }
        ],
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD"
          },
          {
            "criteria": "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "E30D0E6F-4AE8-4284-8716-991DFA48CC5D"
          }
        ],
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "1FE996B1-6951-4F85-AA58-B99A379D2163"
          }
        ],
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:o:fedoraproject:fedora:26:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "6E4D8269-B407-4C24-AAB0-02F885C7D752"
          },
          {
            "criteria": "cpe:2.3:o:fedoraproject:fedora:27:*:*:*:*:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "DBEACBFF-6D05-4B69-BF7A-F7E539D9BF6E"
          }
        ],
        "operator": "OR"
      }
    ]
  },
  {
    "nodes": [
      {
        "negate": false,
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "CAC42CA8-8B01-4A19-A83C-A7D4D08E5E43",
            "versionEndExcluding": "18.11.0",
            "versionStartIncluding": "18.0.0"
          },
          {
            "criteria": "cpe:2.3:a:nodejs:node.js:18.12.0:*:*:*:lts:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "7B1F87EE-4E30-4832-BF01-8501E94380EE"
          },
          {
            "criteria": "cpe:2.3:a:nodejs:node.js:19.0.0:*:*:*:-:*:*:*",
            "vulnerable": true,
            "matchCriteriaId": "F568BBC5-0D8E-499C-9F3E-DDCE5F10F9D5"
          }
        ],
        "operator": "OR"
      }
    ]
  }
]