CVE-2020-1967 – openssl-src

Package

Manager: cargo
Name: openssl-src
Vulnerable Version: >=111.6.0 <111.9.0

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.67225 pctl0.9851

Details

Null pointer deference in openssl-src 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. OpenSSL version 1.1.1d, 1.1.1e, and 1.1.1f are affected by this issue. This issue did not affect OpenSSL versions prior to 1.1.1d. Fixed in OpenSSL 1.1.1g (Affected 1.1.1d-1.1.1f).

Metadata

Created: 2021-08-25T20:45:15Z
Modified: 2021-08-19T21:21:21Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-jq65-29v4-4x35/GHSA-jq65-29v4-4x35.json
CWE IDs: ["CWE-476"]
Alternative ID: GHSA-jq65-29v4-4x35
Finding: F002
Auto approve: 1