[ASA-201808-2] cgit: directory traversal

[Jelle van der Waa]

Arch Linux Security Advisory ASA-201808-2
=========================================

Severity: High
Date    : 2018-08-03
CVE-ID  : CVE-2018-14912
Package : cgit
Type    : directory traversal
Remote  : Yes
Link    : https://security.archlinux.org/AVG-745

Summary
=======

The package cgit before version 1.2.1-1 is vulnerable to directory
traversal.

Resolution
==========

Upgrade to 1.2.1-1.

# pacman -Syu "cgit>=1.2.1-1"

The problem has been fixed upstream in version 1.2.1.

Workaround
==========

Turn off enable-http-clone=1

Description
===========

cgit_clone_objects in CGit before 1.2.1 has a directory traversal
vulnerability when `enable-http-clone=1` is not turned off, as
demonstrated by a cgit/cgit.cgi/git/objects/?path=../ request.

Impact
======

A remote attacker is able to read arbitrary files from the cgit server.

References
==========

https://bugs.chromium.org/p/project-zero/issues/detail?id=1627
https://lists.zx2c4.com/pipermail/cgit/2018-August/004176.html
https://git.zx2c4.com/cgit/commit/?id=53efaf30b50f095cad8c160488c74bba3e3b2680
https://security.archlinux.org/CVE-2018-14912
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