Remote code execution in xzgrep from XZ Utils



| Updated: 2022-04-12
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-1271
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 XZ Utils
Universal components / Libraries / Libraries used by multiple products

Vendor tukaani.org

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Input validation error

EUVDB-ID: #VU62002

Risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/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-2022-1271

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation when processing filenames with two or more newlines. A remote attacker can force zgrep or xzgrep to write arbitrary files on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise the affected system.

Mitigation

Install patch from vendor's website.

Vulnerable software versions

XZ Utils: 4.42.2 alpha - 5.3.2 alpha

CPE2.3 External links

https://tukaani.org/xz/xzgrep-ZDI-CAN-16587.patch
https://tukaani.org/xz/xzgrep-ZDI-CAN-16587.patch.sig


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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