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Status published
Low
CVE-2020-7957
The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3...
Vulnerability Description
The IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
- https://dovecot.org/security
- http://www.openwall.com/lists/oss-security/2020/02/12/2
- https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/
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Affected Vendor
dovecot
View all reports →Affected Software
dovecot, fedora
Vulnerable Versions:
2.3.9, 30, 31
Timeline
Official Publish:
February 12th, 2020
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.0/AC:H/AV:N/A:L/C:N/I:N/PR:N/S:U/UI:R
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.