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


Severity

Recommended
0.0
high
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
0.37% (73rd percentile)

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  • Snyk IDSNYK-CENTOS8-GNUTLSUTILS-2092707
  • published26 Jul 2021
  • disclosed16 Mar 2021

Introduced: 16 Mar 2021

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

How to fix?

Upgrade Centos:8 gnutls-utils to version 0:3.6.14-8.el8_3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls-utils package and not the gnutls-utils package as distributed by Centos. See How to fix? for Centos: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