Use-after-free vulnerability in the CSharedStyleSheet::Notify function in the Cascading Style Sheets (CSS) parser in mshtml.dll, as used in Microsoft Internet Explorer 6 through 8 and other products, allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a self-referential @import rule in a stylesheet, aka "CSS Memory Corruption Vulnerability."

References

• https://nvd.nist.gov/vuln/detail/CVE-2010-3971
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-003
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12382
• http://blogs.technet.com/b/srd/archive/2011/01/07/assessing-the-risk-of-public-issues-currently-being-tracked-by-the-msrc.aspx
• http://seclists.org/fulldisclosure/2010/Dec/110
• http://secunia.com/advisories/42510
• http://support.avaya.com/css/P8/documents/100127294
• http://www.breakingpointsystems.com/community/blog/ie-vulnerability/
• http://www.exploit-db.com/exploits/15708
• http://www.exploit-db.com/exploits/15746
• http://www.kb.cert.org/vuls/id/634956
• http://www.microsoft.com/technet/security/advisory/2488013.mspx
• http://www.securityfocus.com/bid/45246
• http://www.securitytracker.com/id?1024922
• http://www.vupen.com/english/advisories/2010/3156
• http://www.vupen.com/english/advisories/2011/0318
• http://www.wooyun.org/bugs/wooyun-2010-0885