Ubuntu update for gnupg



Published: 2022-07-12
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-34903
CWE-ID CWE-347
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Ubuntu
Operating systems & Components / Operating system

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

gnupg2 (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Verification of Cryptographic Signature

EUVDB-ID: #VU64909

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-34903

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to an error in GnuPG, which allows signature spoofing via arbitrary injection into the status line. A remote attacker who controls the secret part of any signing-capable key or subkey in the victim's keyring, can take advantage of this flaw to provide a correctly-formed signature that some software, including gpgme, will accept to have validity and signer fingerprint chosen from the attacker.

Mitigation

Update the affected package gnupg to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 16.04

gnupg (Ubuntu package): before 2.1.116u buntu2.1+esm1

gnupg2 (Ubuntu package): before 2.1.116u buntu2.1+esm1

External links

http://ubuntu.com/security/notices/USN-5503-2


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.



###SIDEBAR###