CVE-2007-4990
HIGHEPSS 95th pctlDescription
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.
CVSS v2 Vector
No CVSS vector data available.
Exploit Intelligence
Very high risk: more likely to be exploited than 95% of all known CVEs.
References
- 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
- http://www.redhat.com/support/errata/RHSA-2008-0030.html
- http://www.securityfocus.com/archive/1/481432/100/0/threaded
- http://www.securityfocus.com/bid/25898
- http://www.securitytracker.com/id?1018763
- http://www.vupen.com/english/advisories/2007/3337
- http://www.vupen.com/english/advisories/2007/3338
- http://www.vupen.com/english/advisories/2007/3467
- http://www.vupen.com/english/advisories/2008/0149
- http://www.vupen.com/english/advisories/2008/0924/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/36920
- https://issues.rpath.com/browse/RPL-1756
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11599
- https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00352.html
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Start freeThis product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-23.