High severity · published Dec 24, 2020
CVE-2020-35679
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…
7.5
CVSS
2.8%
EPSS
No
On KEV
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
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.8% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FE
Fedora · Fedoraproject
32; 33 · source: NVD
OP
Opensmtpd · Opensmtpd
before 6.8.0; 6.8.0; 6.8.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-35679
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-35679
Patch
https://github.com/openbsd/src/commit/79a034b4aed29e965f45a13409268290c9910043
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5LKTFBQCHGMVPR4IZWHQIYAPM5J3LN3J/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TYAYXRV2DM5K4RU7RHCDZSA2UF6VCTRC/
Third Party Advisory
https://poolp.org/posts/2020-12-24/december-2020-opensmtpd-6.8.0p1-released-fixed-several-bugs-proposed-several-diffs-book-is-on-github/
Third Party Advisory
https://security.gentoo.org/glsa/202105-12
www.mail-archive.com
https://www.mail-archive.com/misc%40opensmtpd.org/msg05188.html
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