rcube_image.php in Roundcube Webmail before 1.4.4 allows attackers to execute arbitrary code via shell metacharacters in a configuration setting for im_convert_path or im_identify_path.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-12641
• roundcube/roundcubemail@fcfb099
• https://github.com/DrunkenShells/Disclosures/tree/master/CVE-2020-12641-Command%20Injection-Roundcube
• roundcube/roundcubemail@1.4.3...1.4.4
• https://github.com/roundcube/roundcubemail/releases/tag/1.4.4
• https://roundcube.net/news/2020/04/29/security-updates-1.4.4-1.3.11-and-1.2.10
• https://security.gentoo.org/glsa/202007-41
• http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00083.html