Vulnerability Monitor

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CVE-2019-14855

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.

Published

2020-03-20T16:15:14.680

Last Modified

2024-11-21T04:27:30.367

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-326
Type: Primary
CWE-326

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	gnupg	gnupg	< 2.2.18	Yes
Operating System	fedoraproject	fedora	30	Yes
Operating System	fedoraproject	fedora	31	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes

References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855 Issue Tracking, Third Party Advisory ([email protected])
https://dev.gnupg.org/T4755 Vendor Advisory ([email protected])
https://lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.html Mailing List, Release Notes, Vendor Advisory ([email protected])
https://rwc.iacr.org/2020/slides/Leurent.pdf Exploit, Third Party Advisory ([email protected])
https://usn.ubuntu.com/4516-1/ Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14855 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://dev.gnupg.org/T4755 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.gnupg.org/pipermail/gnupg-announce/2019q4/000442.html Mailing List, Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://rwc.iacr.org/2020/slides/Leurent.pdf Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4516-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)