| Name | CVE-2020-28200 |
| Description | The Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumption, as demonstrated by a situation with a complex regular expression for the regex extension. |
| 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) |
| Debian Bugs | 990566, 991323 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| dovecot (PTS) | buster | 1:2.3.4.1-5+deb10u6 | vulnerable |
| buster (security) | 1:2.3.4.1-5+deb10u7 | vulnerable |
| bullseye | 1:2.3.13+dfsg1-2+deb11u1 | vulnerable |
| bookworm, sid | 1:2.3.19.1+dfsg1-2.1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| dovecot | source | (unstable) | 1:2.3.16+dfsg1-1 | | | 990566, 991323 |
Notes
[bullseye] - dovecot <postponed> (Minor issue, fix along with next update)
[buster] - dovecot <ignored> (Minor issue, backport is too disruptive)
[stretch] - dovecot <no-dsa> (Minor issue)
https://dovecot.org/pipermail/dovecot-news/2021-June/000460.html
https://www.openwall.com/lists/oss-security/2021/06/28/3