CVE-2020-35679: High severity opensmtpd vulnerability
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.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2020-35679?
CVE-2020-35679 is a vulnerability in OpenSMTPD that allows attackers to trigger a significant memory leak through regex lookups.
How severe is CVE-2020-35679?
CVE-2020-35679 has a severity rating of 7.5 (high).
What software versions are affected by CVE-2020-35679?
OpenSMTPD versions up to and excluding 6.8.0 are affected by CVE-2020-35679.
How can I fix CVE-2020-35679?
To fix CVE-2020-35679, update to OpenSMTPD version 6.8.0p1 or later.
Where can I find more information about CVE-2020-35679?
You can find more information about CVE-2020-35679 in the references provided: [link 1](https://github.com/openbsd/src/commit/79a034b4aed29e965f45a13409268290c9910043), [link 2](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5LKTFBQCHGMVPR4IZWHQIYAPM5J3LN3J/), [link 3](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TYAYXRV2DM5K4RU7RHCDZSA2UF6VCTRC/)