CVE-2019-14855

MEDIUM

Description

A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.

References

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

Details

Source: MITRE

Published: 2020-03-20

Updated: 2020-03-24

Type: CWE-327

Risk Information

CVSS v2.0

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH