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Test ID:1.3.6.1.4.1.25623.1.0.844588
Category:Ubuntu Local Security Checks
Title:Ubuntu: Security Advisory (USN-4516-1)
Summary:The remote host is missing an update for the 'gnupg2' package(s) announced via the USN-4516-1 advisory.
Description:Summary:
The remote host is missing an update for the 'gnupg2' package(s) announced via the USN-4516-1 advisory.

Vulnerability Insight:
It was discovered that GnuPG signatures could be forged when the SHA-1
algorithm is being used. This update removes validating signatures based on
SHA-1 that were generated after 2019-01-19. In environments where this is
still required, a new option --allow-weak-key-signatures can be used to
revert this behaviour.

Affected Software/OS:
'gnupg2' package(s) on Ubuntu 18.04.

Solution:
Please install the updated package(s).

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:N/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2019-14855
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855
https://dev.gnupg.org/T4755
https://lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.html
https://rwc.iacr.org/2020/slides/Leurent.pdf
https://usn.ubuntu.com/4516-1/
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