Out-of-bounds Write Affecting gnutls-devel package, versions <0:3.6.14-8.el8_3


Severity

Recommended
0.0
high
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.37% (73rd percentile)

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  • Snyk IDSNYK-ROCKY8-GNUTLSDEVEL-3295577
  • published3 Feb 2023
  • disclosed5 Apr 2021

Introduced: 5 Apr 2021

CVE-2021-20305  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 gnutls-devel to version 0:3.6.14-8.el8_3 or higher.
This issue was patched in RLSA-2021:1206.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls-devel package and not the gnutls-devel package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions (GOST DSA, EDDSA & ECDSA) result in the Elliptic Curve Cryptography point (ECC) multiply function being called with out-of-range scalers, possibly resulting in incorrect results. This flaw allows an attacker to force an invalid signature, causing an assertion failure or possible validation. The highest threat to this vulnerability is to confidentiality, integrity, as well as system availability.

CVSS Scores

version 3.1