Information Exposure Affecting libgcrypt20 package, versions <1.7.6-2


Severity

0.0
medium
0
10

    Threat Intelligence

    EPSS
    0.4% (74th percentile)

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  • Snyk ID SNYK-DEBIAN12-LIBGCRYPT20-1549996
  • published 11 Jun 2017
  • disclosed 11 Jun 2017

How to fix?

Upgrade Debian:12 libgcrypt20 to version 1.7.6-2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libgcrypt20 package and not the libgcrypt20 package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

In Libgcrypt before 1.7.7, an attacker who learns the EdDSA session key (from side-channel observation during the signing process) can easily recover the long-term secret key. 1.7.7 makes a cipher/ecc-eddsa.c change to store this session key in secure memory, to ensure that constant-time point operations are used in the MPI library.

CVSS Scores

version 3.1
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Snyk

5.9 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    None
  • Availability (A)
    None
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NVD

5.9 medium
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Red Hat

5.9 medium