CVE-2013-7331

CVE-2013-7331 is a medium-severity (CVSS 6.5) vulnerability in Microsoft Internet Explorer. CISA added it to the Known Exploited Vulnerabilities catalog on May 25, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by June 15, 2022. CISA does not currently list it as used in ransomware campaigns. Microsoft has 390 vulnerabilities in the KEV catalog, 117 of them linked to ransomware.

The Microsoft.XMLDOM ActiveX control in Microsoft Windows 8.1 and earlier allows remote attackers to determine the existence of local pathnames, UNC share pathnames, intranet hostnames, and intranet IP addresses by examining error codes, as demonstrated by a res:// URL, and exploited in the wild in February 2014.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

• http://www.fireeye.com/blog/uncategorized/2014/02/operation-snowman-deputydog-actor-compromises-us-veterans-of-foreign-wars-website.html
• http://www.kb.cert.org/vuls/id/539289
• http://www.securitytracker.com/id/1030818
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2014/ms14-052
• https://soroush.secproject.com/blog/2013/04/microsoft-xmldom-in-ie-can-divulge-information-of-local-drivenetwork-in-error-messages/
• http://www.fireeye.com/blog/uncategorized/2014/02/operation-snowman-deputydog-actor-compromises-us-veterans-of-foreign-wars-website.html
• http://www.kb.cert.org/vuls/id/539289
• http://www.securitytracker.com/id/1030818