| 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, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, 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) | jessie, jessie (lts) | 1:2.2.13-12~deb8u9 | vulnerable |
| stretch (security) | 1:2.2.27-3+deb9u7 | vulnerable |
| stretch (lts), stretch | 1:2.2.27-3+deb9u8 | vulnerable |
| buster, buster (lts) | 1:2.3.4.1-5+deb10u8 | vulnerable |
| buster (security) | 1:2.3.4.1-5+deb10u7 | vulnerable |
| bullseye | 1:2.3.13+dfsg1-2+deb11u1 | vulnerable |
| bullseye (security) | 1:2.3.13+dfsg1-2+deb11u2 | vulnerable |
| bookworm (security), bookworm | 1:2.3.19.1+dfsg1-2.1+deb12u1 | fixed |
| sid, trixie | 1:2.3.21.1+dfsg1-1 | 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
[jessie] - dovecot <no-dsa> (Minor issue)