Remote code execution in cGit

1) Path traversal

EUVDB-ID: #VU14196

Risk: High

CVSSv3.1: 9.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2018-14912

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: Yes

Description

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

The vulnerability exists in cgit_clone_objects due to path traversal when `enable-http-clone=1` is not turned off, as demonstrated by a cgit/cgit.cgi/git/objects/?path=../ request. A remote unauthenticated attacker can conduct directory traversal attack and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update to version 1.2.1.

Vulnerable software versions

cgit: 0.1 - 1.2

External links

http://lists.zx2c4.com/pipermail/cgit/2018-August/004176.html

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. However, a fully functional exploit for this vulnerability is available.