Information Exposure Affecting libgcrypt20 package, versions <1.6.3-2
Threat Intelligence
EPSS
0.26% (66th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN12-LIBGCRYPT20-1550029
- published 27 Jun 2018
- disclosed 29 Nov 2019
Introduced: 27 Jun 2018
CVE-2015-0837 Open this link in a new tabHow to fix?
Upgrade Debian:12 libgcrypt20 to version 1.6.3-2 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.
The mpi_powm function in Libgcrypt before 1.6.3 and GnuPG before 1.4.19 allows attackers to obtain sensitive information by leveraging timing differences when accessing a pre-computed table during modular exponentiation, related to a "Last-Level Cache Side-Channel Attack."
References
- https://security-tracker.debian.org/tracker/CVE-2015-0837
- https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000363.html
- https://lists.gnupg.org/pipermail/gnupg-announce/2015q1/000364.html
- http://www.debian.org/security/2015/dsa-3184
- http://www.debian.org/security/2015/dsa-3185
- https://ieeexplore.ieee.org/document/7163050
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2015-0837
CVSS Scores
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