Buffer overflow - CVE-2020-25125
Published: September 3, 2020 / Updated: September 11, 2020
Vulnerability identifier: #VU46664
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-25125
CWE-ID: CWE-120
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Software vendor:
Description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
GnuPG 2.2.21 and 2.2.22 (and Gpg4win 3.1.12) has an array overflow, leading to a crash or possibly unspecified other impact, when a victim imports an attacker's OpenPGP key, and this key has AEAD preferences. The overflow is caused by a g10/key-check.c error. NOTE: GnuPG 2.3.x is unaffected. GnuPG 2.2.23 is a fixed version.
Remediation
Install update from vendor's website.
External links
- http://www.openwall.com/lists/oss-security/2020/09/03/4
- http://www.openwall.com/lists/oss-security/2020/09/03/5
- https://bugzilla.opensuse.org/show_bug.cgi?id=1176034
- https://dev.gnupg.org/rG8ec9573e57866dda5efb4677d4454161517484bc
- https://dev.gnupg.org/T5050
- https://lists.gnupg.org/pipermail/gnupg-announce/2020q3/000448.html