Red Hat Bugzilla – Bug 907425
CVE-2013-0254 qt: QSharedMemory class created shared memory segments with insecure permissions
Last modified: 2015-11-24 10:30:19 EST
A security flaw was found in the way QSharedMemory class implementation of the Qt toolkit created shared memory segments (they were created with world-readable and world-writeable permissions). A local attacker could use this flaw to read or alter content of particular shared memory segment, possibly leading to their ability to obtain sensitive information or influence behaviour of shared memory segment reader process.
Relevant upstream patches:
 (for 5.0 branch):
 (for 4.8 branch):
 (for 4.7 branch):
This issue did NOT affect the version of the qt package, as shipped with Red Hat Enterprise Linux 5 and version of the qt3 package, as shipped with Red Hat Enterprise Linux 6.
This issue affects the version of the qt package, as shipped with Red Hat Enterprise Linux 6.
This issue affects the versions of the qt package, as shipped with Fedora release of 16, 17, and 18.
This issue did not affect the version of the qt3 package, as shipped with Fedora release of 16, 17, and 18.
The CVE identifier of CVE-2013-0254 has been assigned to this issue.
Public now via:
Created qt tracking bugs for this issue
Affects: fedora-all [bug 907928]
qt-4.8.4-11.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.
qt-4.8.4-11.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report.
Red Hat would like to thank the Qt project for reporting this issue. Upstream acknowledges Tim Brown and Mark Lowe of Portcullis Computer Security Ltd. as the original reporters.
This issue has been addressed in following products:
Red Hat Enterprise Linux 6
Via RHSA-2013:0669 https://rhn.redhat.com/errata/RHSA-2013-0669.html