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Information Exposure Affecting libgcrypt package, versions <10:1.8.5-6.el8_fips

Severity

 Recommended
medium

Based on Oracle Linux security rating

    Threat Intelligence

    EPSS
    0.23% (62nd percentile)

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  • Snyk ID SNYK-ORACLE8-LIBGCRYPT-2597125
  • published 10 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-203 Open this link in a new tab

How to fix?

Upgrade Oracle:8 libgcrypt to version 10:1.8.5-6.el8_fips or higher.
This issue was patched in ELSA-2022-9263.

NVD Description

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

CVSS Scores

version 3.1
Expand this section

NVD

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    None
  • Availability (A)
    None
Expand this section

SUSE

7.5 high
Expand this section

Red Hat

7.5 high