Spoofing attack in gnupg (Alpine package)

Published: 2018-06-09

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2018-12020
CWE-ID	CWE-451
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	gnupg (Alpine package) Operating systems & Components / Operating system package or component
Vendor	Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Spoofing attack

EUVDB-ID: #VU13258

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12020

CWE-ID: CWE-451 - User Interface (UI) Misrepresentation of Critical Information (Clickjacking, spoofing)

Exploit availability: No

Description

The vulnerability allows a remote attacker to conduct spoofing attack.

The vulnerability exists due to an input validation flaw in the processing of filenames when displaying the filename. A remote attacker can send a signed and encrypted email message that includes the specially crafted name of the original input file, spoof status messages and fake the verification status of a signed email message.

Mitigation

Install update from vendor's website.

Vulnerable software versions

gnupg (Alpine package): 2.1.12-r0

CPE2.3

cpe:2.3:a:alpine:gnupg_alpine_package:2.1.12-r0:*:*:*:*:alpine_linux:*:3.3

External links

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.