Vulnerability CVE-2019-14855
Published: 2020-03-20

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.

Type:

CWE-327

 (Use of a Broken or Risky Cryptographic Algorithm)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Gnupg -> Gnupg 
Fedoraproject -> Fedora 

 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
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