#VU13236 Path traversal in Perl - CVE-2018-12015

Vulnerability identifier: #VU13236

Vulnerability risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-12015

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Perl
Universal components / Libraries / Scripting languages

Vendor: Perl

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The vulnerability exists due to an error when processing malicious input. A remote attacker can trick the victim into extracting a specially crafted tar archive containing a file and a symbolic link (symlink) with the same name, create a file outside of the current working directory, bypass a directory-traversal protection mechanism and create or overwrite files with the privileges of the target user.

Mitigation
Cybersecurity Help is currently unaware of any solutions addressing the vulnerability.

Vulnerable software versions

Perl: 5.26.0 - 5.26.2

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External links
https://rt.cpan.org/Public/Bug/Display.html?id=125523

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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.