Vulnerability identifier: #VU22598

Vulnerability risk: Low

CVSSv3.1: 2.6 [CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2019-14866

CWE-ID: CWE-20

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
cpio
Client/Desktop applications / Software for archiving

Vendor: GNU

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to GNU cpio does not properly validate files when writing tar headers during tar archive creation. A local user can trick the victim into creating a tar archive out of a directory with specially crafted files. As a result the generated archive may contain files that the attacker does not have access to.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

cpio: 1.0 - 2.11

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External links
http://lists.gnu.org/archive/html/bug-cpio/2019-08/msg00003.html
http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14866

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.