Use of a Broken or Risky Cryptographic Algorithm Affecting libgcrypt package, versions <0:1.8.5-7.el8_6


Severity

Recommended
0.0
medium
0
10

Based on CentOS security rating.

Threat Intelligence

EPSS
1.42% (70th percentile)

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  • Snyk IDSNYK-CENTOS8-LIBGCRYPT-1973574
  • published14 Oct 2021
  • disclosed20 Jul 2021

Introduced: 20 Jul 2021

CVE-2021-40528  (opens in a new tab)
CWE-327  (opens in a new tab)

How to fix?

Upgrade Centos:8 libgcrypt to version 0:1.8.5-7.el8_6 or higher.

NVD Description

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

The ElGamal implementation in Libgcrypt before 1.9.4 allows plaintext recovery because, during interaction between two cryptographic libraries, a certain dangerous combination of the prime defined by the receiver's public key, the generator defined by the receiver's public key, and the sender's ephemeral exponents can lead to a cross-configuration attack against OpenPGP.

CVSS Base Scores

version 3.1