Ubuntu update for gnupg2



| Updated: 2025-04-23
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-14855
CWE-ID CWE-327
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Ubuntu
Operating systems & Components / Operating system

gnupg (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Use of a broken or risky cryptographic algorithm

EUVDB-ID: #VU31993

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-14855

CWE-ID: CWE-327 - Use of a Broken or Risky Cryptographic Algorithm

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

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.

Mitigation

Update the affected package gnupg2 to the latest version.

Vulnerable software versions

Ubuntu: 18.04

gnupg (Ubuntu package): before 2.2.4-1ubuntu1.3

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4516-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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