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