Path traversal in cgit

1) Path traversal

EUVDB-ID: #VU32667

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-2117

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the cgit_parse_readme function in ui-summary.c in cgit before 0.9.2, when a readme file is set to a filesystem path,. A remote authenticated attacker can send a specially crafted HTTP request and remote attackers to read arbitrary files via a . (dot dot) in the url parameter.

Mitigation

Update to version 0.9.2.

Vulnerable software versions

cgit: 0.9.0.1 - 0.9.1

External links

http://git.zx2c4.com/cgit/commit/?h=wip&id=babf94e04e74123eb658a823213c062663cdadd6
http://lists.opensuse.org/opensuse-updates/2013-07/msg00061.html
http://lists.opensuse.org/opensuse-updates/2013-08/msg00012.html
http://lists.zx2c4.com/pipermail/cgit/2013-May/001394.html
http://secunia.com/advisories/54186
http://www.openwall.com/lists/oss-security/2013/05/27/3

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.