Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2023-10-26
• EPSS: 77% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

Roundcube before 1.4.15, 1.5.x before 1.5.5, and 1.6.x before 1.6.4 allows stored XSS via an HTML e-mail message with a crafted SVG document because of program/lib/Roundcube/rcube_washtml.php behavior. This could allow a remote attacker to load arbitrary JavaScript code.

CISA: Roundcube Webmail contains a persistent cross-site scripting (XSS) vulnerability that allows a remote attacker to run malicious JavaScript code.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 16 Nov 2023): Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

• Patch on bugs.debian.orgVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
• Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ References ]References

• www.openwall.com/lists/oss-security/2023/11/01/1Mailing ListThird Party Advisory
• www.openwall.com/lists/oss-security/2023/11/01/3Mailing ListThird Party Advisory
• www.openwall.com/lists/oss-security/2023/11/17/2Mailing ListThird Party Advisory
• bugs.debian.org/cgi-bin/bugreport.cgiMailing ListPatch
• github.com/roundcube/roundcubemail/commit/41756cc3331b495cc0b71886984474dc529dd31dPatch
• github.com/roundcube/roundcubemail/commit/6ee6e7ae301e165e2b2cb703edf75552e5376613Patch
• github.com/roundcube/roundcubemail/issues/9168ExploitIssue Tracking
• github.com/roundcube/roundcubemail/releases/tag/1.4.15Release Notes
• github.com/roundcube/roundcubemail/releases/tag/1.5.5Release Notes
• github.com/roundcube/roundcubemail/releases/tag/1.6.4Release Notes
• lists.debian.org/debian-lts-announce/2023/10/msg00035.htmlMailing ListThird Party Advisory
• lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/…Mailing List
• roundcube.net/news/2023/10/16/security-update-1.6.4-releasedRelease Notes
• roundcube.net/news/2023/10/16/security-updates-1.5.5-and-1.4.15Release Notes
• www.debian.org/security/2023/dsa-5531Mailing List
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource