CVE-2020-35679

High

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.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Opensmtpd

PublishedDec 24, 2020

First seenDec 24, 2020

How to fix

Update

opensmtpd opensmtpd6.8.0 or later

Vendor advisories

lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TYAYXRV2DM5K4RU7RHCDZSA2UF6VCTRC/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LKTFBQCHGMVPR4IZWHQIYAPM5J3LN3J/
security.gentoo.org/glsa/202105-12

Affected products

Product	Affected versions	Fixed in
opensmtpd opensmtpd	v < 6.8.0, 6.8.0	6.8.0
fedoraproject fedora	32, 33	—

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