ELA-1144-1 exim4 security update

wrong parsing of multiline RFC 2231 header filenames

2024-07-31
Packageexim4
Version4.89-2+deb9u13 (stretch), 4.92-8+deb10u10 (buster)
Related CVEs CVE-2024-39929


An issue has been found in exim4, the Mail Transport Agent. Due to bad parsing of multiline RFC 2231 header filenames in mime ACL, a remote attacker could bypass this protection mechanism and potentially deliver executable attachements to mailboxes.



For Debian 10 buster, these problems have been fixed in version 4.92-8+deb10u10.

For Debian 9 stretch, these problems have been fixed in version 4.89-2+deb9u13.

We recommend that you upgrade your exim4 packages.

Further information about Extended LTS security advisories can be found in the dedicated section of our website.