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Amazon Linux AMI: CVE-2021-33560: Security patch for libgcrypt (ALAS-2022-1578)

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Amazon Linux AMI: CVE-2021-33560: Security patch for libgcrypt (ALAS-2022-1578)

Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
06/08/2021
Created
04/09/2022
Added
04/07/2022
Modified
04/07/2022

Description

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.

Solution(s)

  • amazon-linux-upgrade-libgcrypt

References

  • ALAS-2022-1578
  • CVE-2021-33560
  • USN-5080-1
  • USN-5080-2

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