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Use of a Broken or Risky Cryptographic Algorithm Affecting libgcrypt package, versions <0:1.5.3-12.20.amzn1

medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High

    Threat Intelligence

    EPSS 0.24% (62nd percentile)
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NVD
7.5 high
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SUSE
7.5 high
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Red Hat
7.5 high

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  • Snyk ID SNYK-AMZN201803-LIBGCRYPT-2443099
  • published 8 Apr 2022
  • disclosed 8 Jun 2021
Report a new vulnerability Found a mistake?

Introduced: 8 Jun 2021

CVE-2021-33560 Open this link in a new tab
CWE-327 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2018.03 libgcrypt to version 0:1.5.3-12.20.amzn1 or higher.
This issue was patched in ALAS-2022-1578.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libgcrypt package and not the libgcrypt package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

Libgcrypt before 1.8.8 and 1.9.x before 1.9.3 mishandles ElGamal encryption because it lacks exponent blinding to address a side-channel attack against mpi_powm, and the window size is not chosen appropriately. This, for example, affects use of ElGamal in OpenPGP.

References