CVE-2007-4990

Impact

The swap_char2b function in X.Org X Font Server (xfs) before 1.0.5 allows context-dependent attackers to execute arbitrary code via (1) QueryXBitmaps and (2) QueryXExtents protocol requests with crafted size values that specify an arbitrary number of bytes to be swapped on the heap, which triggers heap corruption.

Affected products

Weakness classification

References

• NVD record
• CVE.org record
• http://bugs.freedesktop.org/show_bug.cgi?id=12299
• http://bugs.gentoo.org/show_bug.cgi?id=194606
• http://docs.info.apple.com/article.html?artnum=307562
• http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01323725
• http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=602
• http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
• http://lists.freedesktop.org/archives/xorg-announce/2007-October/000416.html
• http://secunia.com/advisories/27040
• http://secunia.com/advisories/27052
• http://secunia.com/advisories/27060
• http://secunia.com/advisories/27176
• http://secunia.com/advisories/27228
• http://secunia.com/advisories/27240
• http://secunia.com/advisories/27560
• http://secunia.com/advisories/28004
• http://secunia.com/advisories/28514
• http://secunia.com/advisories/28536
• http://secunia.com/advisories/28542
• http://secunia.com/advisories/29420
• http://security.gentoo.org/glsa/glsa-200710-11.xml
• http://sunsolve.sun.com/search/document.do?assetkey=1-26-103114-1
• http://sunsolve.sun.com/search/document.do?assetkey=1-66-200642-1
• http://www.mandriva.com/security/advisories?name=MDKSA-2007:210
• http://www.novell.com/linux/security/advisories/2007_54_xorg.html
• http://www.redhat.com/support/errata/RHSA-2008-0029.html