An integer overflow flaw, leading to heap-based buffer overflow was found in the OpenEXR's routine, decompressing range of values in the pixel data. A remote attacker provide a specially-crafted image file, which once opened, by a local, unsuspecting user, would lead to denial of service ("exrmakepreview crash") or potentially, arbitrary code execution with the privileges of user opening the image. References: ----------- http://openexr.com/ Part "Announcements" October 22, 2007 - New versions of OpenEXR and CTL are now available. This release fixes a buffer overrun in OpenEXR and a Windows build problem in CTL, and it removes a few unnecessary files from the .tar.gz packages.
This issue does NOT affect the versions of the OpenEXR package, as shipped with Fedora releases of 10 and 11. This issue affects the versions of the OpenEXR package, as shipped with the Extra Packages for Enterprise Linux 4 (EPEL4) and Extra Packages for Enterprise Linux 5 (EPEL5) projects.
Public now via: http://seclists.org/fulldisclosure/2009/Jul/0444.html
Relevant patches for this bug (from Drew Yao): ---------------------------------------------- http://cvs.savannah.gnu.org/viewvc/OpenEXR/ChangeLog?root=openexr&r1=1.111&r2=1.112 http://cvs.savannah.gnu.org/viewvc/OpenEXR/IlmImf/ImfHeader.cpp?root=openexr&r1=1.17&r2=1.19 http://cvs.savannah.gnu.org/viewvc/OpenEXR/IlmImf/ImfHeader.h?root=openexr&r1=1.7&r2=1.8 http://cvs.savannah.gnu.org/viewvc/OpenEXR/IlmImf/ImfPizCompressor.cpp?root=openexr&r1=1.6&r2=1.7
OpenEXR-1.4.0a-5.el5 has been submitted as an update for Fedora EPEL 5. http://admin.fedoraproject.org/updates/OpenEXR-1.4.0a-5.el5
OpenEXR-1.4.0a-5.el4 has been submitted as an update for Fedora EPEL 4. http://admin.fedoraproject.org/updates/OpenEXR-1.4.0a-5.el4
OpenEXR-1.4.0a-5.el4 has been pushed to the Fedora EPEL 4 stable repository. If problems still persist, please make note of it in this bug report.
OpenEXR-1.4.0a-5.el5 has been pushed to the Fedora EPEL 5 stable repository. If problems still persist, please make note of it in this bug report.