| 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, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more) |
| References | DLA-2213-1, DSA-4687-1 |
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 | jessie | 4.84.2-2+deb8u7 | DLA-2213-1 | ||
| exim4 | source | stretch | 4.89-2+deb9u7 | DSA-4687-1 | ||
| exim4 | source | buster | 4.92-8+deb10u4 | DSA-4687-1 | ||
| exim4 | source | (unstable) | 4.93-16 |
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