| Name | CVE-2018-6789 |
| Description | An issue was discovered in the base64d function in the SMTP listener in Exim before 4.90.1. By sending a handcrafted message, a buffer overflow may happen. This can be used to execute code remotely. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more) |
| References | DLA-1274-1, DSA-4110-1 |
| Debian Bugs | 890000 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| exim4 (PTS) | buster | 4.92-8+deb10u6 | fixed |
| buster (security) | 4.92-8+deb10u7 | fixed | |
| bullseye | 4.94.2-7 | fixed | |
| bookworm, sid | 4.96-14 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| exim4 | source | wheezy | 4.80-7+deb7u6 | DLA-1274-1 | ||
| exim4 | source | jessie | 4.84.2-2+deb8u5 | DSA-4110-1 | ||
| exim4 | source | stretch | 4.89-2+deb9u3 | DSA-4110-1 | ||
| exim4 | source | (unstable) | 4.90.1-1 | 890000 |
https://www.openwall.com/lists/oss-security/2018/02/07/2
https://exim.org/static/doc/security/CVE-2018-6789.txt
https://bugs.exim.org/show_bug.cgi?id=2235
https://git.exim.org/exim.git/commit/062990cc1b2f9e5d82a413b53c8f0569075de700