openSUSE Security Update: xorg-x11-server: Fix multiple bugs and security vulnerabilities ______________________________________________________________________________ Announcement ID: openSUSE-SU-2010:0561-1 Rating: moderate References: #546632 #597232 #618152 #623254 #625593 Cross-References: CVE-2010-2240 Affected Products: openSUSE 11.3 ______________________________________________________________________________ An update that solves one vulnerability and has four fixes is now available. Description: The X.Org X11 Server was updated to fix several bugs and 2 security issues: Two security issues were fixed: CVE-2010-2240: This fix adds a workaround for overlapping stacks and heaps in case of OOM conditions.This workaround is necessary if the kernel is not properly adding guard or gap-pages below the stack. CVE-2010-1166: The fbComposite function in fbpict.c in the Render extension in the X server in X.Org X11R7.1 allows remote authenticated users to cause a denial of service (memory corruption and daemon crash) or possibly execute arbitrary code via a crafted request, related to an incorrect macro definition. Non-Security Bugs fixed: Fix some shortcomings in the Xdmcp implementation. It used to suppress loopback addresses from the list of potential display addresses to report to xdm, even when talking to xdm through a loopback address. Now only display addresses of the same kind as the xdm connection are reported to xdm. This most notably helps Xvnc servers contacting the local xdm, because they were severely affected by the suppression of loopback addresses. Patch Instructions: To install this openSUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product: - openSUSE 11.3: zypper in -t patch xorg-x11-Xvnc-2973 To bring your system up-to-date, use "zypper patch". Package List: - openSUSE 11.3 (i586 x86_64): xorg-x11-Xvnc-7.5_1.8.0-10.3.1 xorg-x11-server-7.5_1.8.0-10.3.1 xorg-x11-server-extra-7.5_1.8.0-10.3.1 xorg-x11-server-sdk-7.5_1.8.0-10.3.1 References: http://support.novell.com/security/cve/CVE-2010-2240.html https://bugzilla.novell.com/546632 https://bugzilla.novell.com/597232 https://bugzilla.novell.com/618152 https://bugzilla.novell.com/623254 https://bugzilla.novell.com/625593