[manjaro-security] [arch-security] [ASA-201710-9] lib32-krb5: arbitrary code execution

[Levente Polyak]

Arch Linux Security Advisory ASA-201710-9
=========================================

Severity: High
Date    : 2017-10-05
CVE-ID  : CVE-2017-11462
Package : lib32-krb5
Type    : arbitrary code execution
Remote  : Yes
Link    : https://security.archlinux.org/AVG-415

Summary
=======

The package lib32-krb5 before version 1.15.2-1 is vulnerable to
arbitrary code execution.

Resolution
==========

Upgrade to 1.15.2-1.

# pacman -Syu "lib32-krb5>=1.15.2-1"

The problem has been fixed upstream in version 1.15.2.

Workaround
==========

None.

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

A double free vulnerability has been discovered in MIT Kerberos 5 (aka
krb5) allowing attackers to crash the application or possibly execute
arbitrary code via vectors involving automatic deletion of security
contexts on error.

Impact
======

A remote attacker is able to crash the application or possibly execute
arbitrary code on the affected host.

References
==========

https://web.mit.edu/kerberos/krb5-1.15/
http://krbdev.mit.edu/rt/Ticket/Display.html?id=8598
https://bugzilla.redhat.com/show_bug.cgi?id=1488873
https://github.com/krb5/krb5/commit/56f7b1bc95a2a3eeb420e069e7655fb181ade5cf
https://security.archlinux.org/CVE-2017-11462

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