#VU11646 Improper input validation in Patch - CVE-2018-1000156

Vulnerability identifier: #VU11646

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-1000156

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Patch
Server applications / File servers (FTP/HTTP)

Vendor: GNU

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists in the EDITOR_PROGRAM invocation due to improper input validation. A remote attacker can send a specially crafted patch file and execute arbitrary code.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Patch: 2.7.6

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External links
https://savannah.gnu.org/bugs/index.php?53566

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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.