[arch-security] [ASA-201706-12] gnutls: denial of service
Remi Gacogne
rgacogne at archlinux.org
Tue Jun 13 19:15:05 UTC 2017
Arch Linux Security Advisory ASA-201706-12
==========================================
Severity: Medium
Date : 2017-06-13
CVE-ID : CVE-2017-7507
Package : gnutls
Type : denial of service
Remote : Yes
Link : https://security.archlinux.org/AVG-294
Summary
=======
The package gnutls before version 3.5.13-1 is vulnerable to denial of
service.
Resolution
==========
Upgrade to 3.5.13-1.
# pacman -Syu "gnutls>=3.5.13-1"
The problem has been fixed upstream in version 3.5.13.
Workaround
==========
None.
Description
===========
A security issue has been found in GnuTLS < 3.5.13, where decoding a
status request TLS extension that has a non-empty responder IDs list
could lead to a crash due to a null pointer dereference.
Impact
======
A remote attacker can crash a vulnerable TLS server by sending a
crafted status_request extension in a ClientHello message.
References
==========
https://www.gnutls.org/security.html#GNUTLS-SA-2017-4
https://bugzilla.redhat.com/show_bug.cgi?id=1454621
https://security.archlinux.org/CVE-2017-7507
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