Arch Linux Security Advisory ASA-201707-6

Severity: Medium
Date : 2017-07-11
CVE-ID : CVE-2017-7507
Package : lib32-gnutls
Type : denial of service
Remote : Yes
Link : https://security.archlinux.org/AVG-295

Summary

The package lib32-gnutls before version 3.5.13-1 is vulnerable to
denial of service.

Resolution

Upgrade to 3.5.13-1.

pacman -Syu “lib32-gnutls>=3.5.13-1”

The problem has been fixed upstream in version 3.5.13.

Workaround

None.

Description

GnuTLS version 3.5.12 and earlier is vulnerable to a NULL pointer
dereference while decoding a status response TLS extension with valid
contents. This could lead to a crash of the GnuTLS server application.

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