Arch Linux: ASA-201504-7 High: Multiple Tor Service Issues

Arch Linux Security Advisory ASA-201504-7
========================================
Severity: high
Date    : 2015-04-07
CVE-ID  : CVE-2015-2928 CVE-2015-2929
Package : tor
Type    : multiple issues
Remote  : yes
Link    : https://wiki.archlinux.org/title/CVE

Summary
======
The package tor before version 0.2.5.12-1 is vulnerable against 
multiple issues. 

Resolution
=========
Upgrade to 0.2.5.12-1

# pacman -Syu "tor>=0.2.5.12-1"

The problem has been fixed upstream in version 0.2.5.12.

Workaround
=========
None.

Description
==========
CVE-2015-2928

    "disgleirio" discovered that a malicious client could trigger an
    assertion failure in a Tor instance providing a hidden service,
    thus rendering the service inaccessible.

CVE-2015-2929

    "DonnchaC" discovered that Tor clients would crash with an
    assertion failure upon parsing specially crafted hidden service
    descriptors.



Impact
=====
An attacker could crash a Tor client or could make a Tor service 
inaccessible.

References
=========
https://gitlab.torproject.org/legacy/trac/-/issues/15600
https://gitlab.torproject.org/legacy/trac/-/issues/15601
https://seclists.org/oss-sec/2015/q2/56