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7.5
CVSSv3

CVE-2020-35679

Published: 24/12/2020 Updated: 07/11/2023
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P
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Vulnerability Summary

smtpd/table.c in OpenSMTPD prior to 6.8.0p1 lacks a certain regfree, which might allow malicious users to trigger a "very significant" memory leak via messages to an instance that performs many regex lookups.

Vulnerability Trend

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opensmtpd opensmtpd 6.8.0

opensmtpd opensmtpd

fedoraproject fedora 32

fedoraproject fedora 33

Vendor Advisories

Debian CVElist Bug Report Logs: opensmtpd: CVE-2020-35679
Debian Bug report logs - #978038 opensmtpd: CVE-2020-35679 Package: src:opensmtpd; Maintainer for src:opensmtpd is Ryan Kavanagh <rak@debianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Thu, 24 Dec 2020 22:18:02 UTC Severity: important Tags: security, upstream Found in version opensmtpd/680p1~ ...
Arch Linux Issues:
smtpd/tablec in OpenSMTPD before 680p1 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

CWE-401https://github.com/openbsd/src/commit/79a034b4aed29e965f45a13409268290c9910043https://poolp.org/posts/2020-12-24/december-2020-opensmtpd-6.8.0p1-released-fixed-several-bugs-proposed-several-diffs-book-is-on-github/https://security.gentoo.org/glsa/202105-12https://www.mail-archive.com/misc%40opensmtpd.org/msg05188.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TYAYXRV2DM5K4RU7RHCDZSA2UF6VCTRC/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LKTFBQCHGMVPR4IZWHQIYAPM5J3LN3J/https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=978038https://nvd.nist.govhttps://security.archlinux.org/CVE-2020-35679
CVSSv3
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2022-48693CVE-2024-30851CVE-2024-34460CVE-2024-2887localCVE-2024-27956remote code executionCVE-2024-34475privilege
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