| Name | CVE-2024-39929 |
| Description | Exim through 4.97.1 misparses a multiline RFC 2231 header filename, and thus remote attackers can bypass a $mime_filename extension-blocking protection mechanism, and potentially deliver executable attachments to the mailboxes of end users. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DSA-5728-1, ELA-1144-1 |
| Debian Bugs | 1075785 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| exim4 (PTS) | jessie, jessie (lts) | 4.84.2-2+deb8u13 | fixed |
| stretch (security) | 4.89-2+deb9u8 | vulnerable |
| stretch (lts), stretch | 4.89-2+deb9u14 | fixed |
| buster, buster (lts) | 4.92-8+deb10u11 | fixed |
| buster (security) | 4.92-8+deb10u9 | vulnerable |
| bullseye | 4.94.2-7+deb11u3 | fixed |
| bullseye (security) | 4.94.2-7+deb11u4 | fixed |
| bookworm | 4.96-15+deb12u6 | fixed |
| bookworm (security) | 4.96-15+deb12u5 | fixed |
| trixie | 4.98-2 | fixed |
| sid | 4.98-3 | fixed |
The information below is based on the following data on fixed versions.
Notes
https://git.exim.org/exim.git/commit/6ce5c70cff8989418e05d01fd2a57703007a6357 (exim-4.98-RC3)
https://git.exim.org/exim.git/commit/1b3209b0577a9327ebb076f3b32b8a159c253f7b (exim-4.98-RC3)
https://bugs.exim.org/show_bug.cgi?id=3099#c4
[jessie] - exim4 <not-affected> (Vulnerable code introduced later in version 4.86)