An integer overflow leading to heap-based buffer overflow was found in libXrandr, X.Org X11 libXrandr runtime library. When a X client is connected to a malicious X server, (modified to return invalid values), it can cause arbirary code execution with the privileges of the user running the X client.
Affected functions: XRRQueryOutputProperty(), XRRQueryProviderProperty()
[XRRQueryProviderProperty() was introduced in libXrandr 1.4.0 and is
not found in 1.3.2 and older releases.]
Created libXrandr tracking bugs for this issue
Affects: fedora-all [bug 966813]
libXrandr-1.4.0-4.20130524gitc90f74497.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report.
libXrandr-1.4.0-4.20130524gitc90f74497.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
This issue affects the version of libXrandr as shipped with Red Hat Enterprise Linux 5 and 6.
This issue affects the libXrandr package in Red Hat Enterprise Linux 5. Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not planned to be fixed in Red Hat Enterprise Linux 5 as it is now in Production 3 Phase of the support and maintenance life cycle: https://access.redhat.com/support/policy/updates/errata/
This issue has been addressed in the following products:
Red Hat Enterprise Linux 6
Via RHSA-2014:1436 https://rhn.redhat.com/errata/RHSA-2014-1436.html