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CVE-2020-35679

Published: Dec 24, 2020Updated: Nov 21, 2024 Sources: CVE List NVDCWE-401
NVD MITRE
7.5CVSSHIGH
EPSS Score
2.8%
Top 15.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-401

Affected Products

n/an/a
opensmtpdopensmtpd
On-prem
Communications / email-server-client
fedorafedoraproject
On-premOS
Operating Systems / linux-distro
opensmtpdoss-projectCommunications
fedoraprojectoss-projectUSOperating Systemsaka fedora project

Exploitability

Official Patch Available

References

https://poolp.org/posts/2020-12-24/december-2020-opensmtpd-6.8.0p1-released-fixed-several-bugs-proposed-several-diffs-book-is-on-github/
poolp.org
https://www.mail-archive.com/misc%40opensmtpd.org/msg05188.html
mail-archive.com
https://github.com/openbsd/src/commit/79a034b4aed29e965f45a13409268290c9910043
github.com
and 3 more references View all →

Timeline

Published
Dec 24, 2020
Last Updated
Nov 21, 2024

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