| Name | CVE-2020-28019 |
| Description | Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-2650-1, DSA-4912-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| exim4 (PTS) | bullseye | 4.94.2-7+deb11u3 | fixed |
| bullseye (security) | 4.94.2-7+deb11u4 | fixed |
| bookworm, bookworm (security) | 4.96-15+deb12u7 | fixed |
| sid, trixie | 4.98.2-1 | fixed |
The information below is based on the following data on fixed versions.
Notes
Introduced by: https://git.exim.org/exim.git/commit/7e3ce68e68ab9b8906a637d352993abf361554e2 (exim-4_88_RC1)
https://www.openwall.com/lists/oss-security/2021/05/04/7