CVE-2020-28200 — Allocation of Resources Without Limits or Throttling in Dovecot

CWE-770 — Allocation of Resources Without Limits or ThrottlingCWE-697 — Incorrect ComparisonCWE-400 — Uncontrolled Resource Consumption6 documents6 sources
Severity
4.3MEDIUMNVD
EPSS
1.2%
top 20.71%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
DovecotDebian DovecotFedoraproject Fedora+1 more
Timeline
PublishedJun 28
Latest updateMay 24

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:LExploitability: 2.8 | Impact: 1.4

Affected Packages4 packages

▶debiandebian/dovecot< dovecot 1:2.3.16+dfsg1-1 (bookworm)
▶NVDdovecot/dovecot< 2.3.15
▶Debiandovecot/dovecot< 1:2.3.16+dfsg1-1+2

Also affects: Fedora 33, 34

🔴Vulnerability Details

2
GHSA
GHSA-f6jc-wwhw-gpq7: The Sieve engine in Dovecot before 2↗2022-05-24
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OSV
CVE-2020-28200: The Sieve engine in Dovecot before 2↗2021-06-28
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📋Vendor Advisories

3
Red Hat
dovecot: insufficient protection against excessive resource usage allows for a DoS↗2021-06-21
▶
Microsoft
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.↗2021-06-08
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Debian
CVE-2020-28200: dovecot - The Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumpti...↗2020
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