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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTgzbXgtNTczeC01cnc5

openssl-src NULL pointer Dereference in signature_algorithms processing

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).

Permalink: https://github.com/advisories/GHSA-83mx-573x-5rw9
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTgzbXgtNTczeC01cnc5
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 3 years ago
Updated: over 1 year ago

CVSS Score: 5.9
CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Percentage: 0.00496
EPSS Percentile: 0.76532

Identifiers: GHSA-83mx-573x-5rw9, CVE-2021-3449
References:

Blast Radius: 21.0

Affected Packages

cargo:openssl-src

Dependent packages: 13
Dependent repositories: 3,600
Downloads: 29,213,136 total
Affected Version Ranges: < 111.15.0
Fixed in: 111.15.0
All affected versions: 110.0.0, 110.0.0, 110.0.1, 110.0.2, 110.0.3, 110.0.4, 110.0.5, 110.0.6, 110.0.7, 111.0.0, 111.0.1, 111.1.0, 111.1.1, 111.2.1, 111.3.0, 111.4.0, 111.5.0, 111.6.0, 111.6.1, 111.7.0, 111.8.0, 111.8.1, 111.9.0, 111.10.0, 111.10.1, 111.10.2, 111.11.0, 111.12.0, 111.13.0, 111.14.0
All unaffected versions: 111.15.0, 111.16.0, 111.17.0, 111.18.0, 111.19.0, 111.20.0, 111.21.0, 111.22.0, 111.23.0, 111.24.0, 111.25.0, 111.25.1, 111.25.2, 111.25.3, 111.26.0, 111.27.0, 111.28.0, 111.28.1, 111.28.2, 300.0.0, 300.0.1, 300.0.2, 300.0.3, 300.0.4, 300.0.5, 300.0.6, 300.0.7, 300.0.8, 300.0.9, 300.0.10, 300.0.11, 300.0.12, 300.0.13, 300.1.0, 300.1.1, 300.1.2, 300.1.3, 300.1.4, 300.1.5, 300.1.6, 300.2.0, 300.2.1, 300.2.2, 300.2.3, 300.3.0, 300.3.1, 300.3.2, 300.4.0, 300.4.1