[ASA-201807-2] git-annex: multiple issues

[Jelle van der Waa]

Arch Linux Security Advisory ASA-201807-2
=========================================

Severity: High
Date    : 2018-07-04
CVE-ID  : CVE-2018-10857 CVE-2018-10859
Package : git-annex
Type    : multiple issues
Remote  : Yes
Link    : https://security.archlinux.org/AVG-725

Summary
=======

The package git-annex before version 6.20180626-1 is vulnerable to
multiple issues including arbitrary filesystem access and information
disclosure.

Resolution
==========

Upgrade to 6.20180626-1.

# pacman -Syu "git-annex>=6.20180626-1"

The problems have been fixed upstream in version 6.20180626.

Workaround
==========

None.

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

- CVE-2018-10857 (arbitrary filesystem access)

Some uses of git-annex were vulnerable to a private data exposure and
exfiltration attack. It could expose the content of files located
outside the git-annex repository, or content from a private web server
on localhost or the LAN.

- CVE-2018-10859 (information disclosure)

A malicious server for a special remote could trick git-annex into
decrypting a file that was encrypted to the user's gpg key. This attack
could be used to expose encrypted data that was never stored in git-
annex

Impact
======

A remote attacker is able to read arbitrary files on the filesystem or
decrypt encrypted files by modifying the git-annex repository.

References
==========

https://git-annex.branchable.com/security/CVE-2018-10857_and_CVE-2018-10859/
https://git.joeyh.name/index.cgi/git-annex.git/commit/?id=b54b2cdc0ef1373fc200c0d28fded3c04fd57212
https://security.archlinux.org/CVE-2018-10857
https://security.archlinux.org/CVE-2018-10859
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