Vulmon
Amazon Linux 2 Security Advisory: ALAS-2021-1629
Advisory Release Date: 2021-04-20 17:55 Pacific
Advisory Updated Date: 2021-04-21 17:57 Pacific
Severity:
Important
References:
CVE-2021-20305
Issue Overview:
A flaw was found in Nettle, 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. (CVE-2021-20305)
Affected Packages:
nettle
Issue Correction:
Run yum update nettle to update your system.
New Packages:
aarch64:
nettle-2.7.1-9.amzn2.aarch64
nettle-devel-2.7.1-9.amzn2.aarch64
nettle-debuginfo-2.7.1-9.amzn2.aarch64
i686:
nettle-2.7.1-9.amzn2.i686
nettle-devel-2.7.1-9.amzn2.i686
nettle-debuginfo-2.7.1-9.amzn2.i686
src:
nettle-2.7.1-9.amzn2.src
x86_64:
nettle-2.7.1-9.amzn2.x86_64
nettle-devel-2.7.1-9.amzn2.x86_64
nettle-debuginfo-2.7.1-9.amzn2.x86_64