Description
smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger a "very significant" memory leak via messages to an instance that performs many regex lookups.
References (6)
Core 6
Core References
Third Party Advisory x_refsource_misc
https://poolp.org/posts/2020-12-24/december-2020-opensmtpd-6.8.0p1-released-fixed-several-bugs-proposed-several-diffs-book-is-on-github/
Mailing List x_refsource_misc
https://www.mail-archive.com/misc%40opensmtpd.org/msg05188.html
Patch, Third Party Advisory x_refsource_misc
https://github.com/openbsd/src/commit/79a034b4aed29e965f45a13409268290c9910043
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TYAYXRV2DM5K4RU7RHCDZSA2UF6VCTRC/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LKTFBQCHGMVPR4IZWHQIYAPM5J3LN3J/
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202105-12
Scores
CVSS v3
7.5
EPSS
0.0284
EPSS Percentile
84.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-401
Status
published
Products (4)
fedoraproject/fedora
32
fedoraproject/fedora
33
opensmtpd/opensmtpd
6.8.0 (2 CPE variants)
opensmtpd/opensmtpd
< 6.8.0
Published
Dec 24, 2020
Tracked Since
Feb 18, 2026