CVE-2020-7046 — Infinite Loop in Dovecot

CWE-835 — Infinite LoopCWE-20 — Improper Input Validation6 documents6 sources
Severity
7.5HIGHNVD
EPSS
1.0%
top 23.15%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
DovecotFedoraproject FedoraDebian Dovecot
Timeline
PublishedFeb 12
Latest updateMay 24

Description

lib-smtp in submission-login and lmtp in Dovecot 2.3.9 before 2.3.9.3 mishandles truncated UTF-8 data in command parameters, as demonstrated by the unauthenticated triggering of a submission-login infinite loop.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶NVDdovecot/dovecot2.3.9 — 2.3.9.3
▶Alpinedovecot/dovecot< 2.3.10.1-r0+15

Also affects: Fedora 30, 31

🔴Vulnerability Details

2
GHSA
GHSA-xxqf-cf9x-9rwq: lib-smtp in submission-login and lmtp in Dovecot 2↗2022-05-24
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OSV
CVE-2020-7046: lib-smtp in submission-login and lmtp in Dovecot 2↗2020-02-12
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📋Vendor Advisories

2
Red Hat
dovecot: Attacker can cause submission-login and lmtp processes to be exhausted leading to DoS↗2020-02-12
▶
Debian
CVE-2020-7046: dovecot - lib-smtp in submission-login and lmtp in Dovecot 2.3.9 before 2.3.9.3 mishandles...↗2020
▶

💬Community

1
Bugzilla
CVE-2020-7046 dovecot: Attacker can cause submission-login and lmtp processes to be exhausted leading to DoS↗2020-02-07
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