| Name | CVE-2020-12783 |
| Description | Exim through 4.93 has an out-of-bounds read in the SPA authenticator that could result in SPA/NTLM authentication bypass in auths/spa.c and auths/auth-spa.c. |
| 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-2213-1, DSA-4687-1 |
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 | fixed |
| stretch (lts), stretch | 4.89-2+deb9u14 | fixed |
| buster, buster (lts) | 4.92-8+deb10u11 | fixed |
| buster (security) | 4.92-8+deb10u9 | fixed |
| 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://bugs.exim.org/show_bug.cgi?id=2571
https://git.exim.org/exim.git/commitdiff/57aa14b216432be381b6295c312065b2fd034f86
https://git.exim.org/exim.git/commitdiff/a04174dc2a84ae1008c23b6a7109e7fa3fb7b8b0