CVE-2023-43770
Roundcube Webmail Persistent Cross-Site Scripting (XSS) Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 4 March 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
Roundcube before 1.4.14, 1.5.x before 1.5.4, and 1.6.x before 1.6.3 allows XSS via text/plain e-mail messages with crafted links because of program/lib/Roundcube/rcube_string_replacer.php behavior.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 58.48% probability · 99th percentile
- CISA KEV
- Listed 12 February 2024 · due 4 March 2024
- Weakness
- CWE-79
- Affected
- roundcube/webmail · debian/debian linux
- Source
- cve@mitre.org
CISA notes
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. https://roundcube.net/news/2023/09/15/security-update-1.6.3-released ; https://nvd.nist.gov/vuln/detail/CVE-2023-43770
References
- https://github.com/roundcube/roundcubemail/commit/e92ec206a886461245e1672d8530cc93c618a49bPatch
- https://lists.debian.org/debian-lts-announce/2023/09/msg00024.htmlMailing List
- https://roundcube.net/news/2023/09/15/security-update-1.6.3-releasedRelease Notes
- https://github.com/roundcube/roundcubemail/commit/e92ec206a886461245e1672d8530cc93c618a49bPatch
- https://lists.debian.org/debian-lts-announce/2023/09/msg00024.htmlMailing List
- https://roundcube.net/news/2023/09/15/security-update-1.6.3-releasedRelease Notes
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-43770US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.