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CVE-2020-35680

nvd nist
Published: Dec 24, 2020Modified: Nov 21, 2024

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: NVD

Description

smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted pattern of client activity, because the filter state machine does not properly maintain the I/O channel between the SMTP engine and the filters layer.

Affected (5)

Opensmtpd
1 product
Opensmtpd
Fedoraproject
1 product
Fedora
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Opensmtpd
Opensmtpd
Before 6.8.0
Opensmtpd
Version 6.8.0
Opensmtpd
Version 6.8.0 patch1-rc1
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Fedoraproject
Fedora
Version 32
Fedora
Version 33

Related CWEs

CWE-476
NULL Pointer Dereference
The product dereferences a pointer that it expects to be valid but is NULL.

References (12)

Source: cve@mitre.org
PatchThird Party Advisory
Source: cve@mitre.org
Source: cve@mitre.org
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
Source: af854a3a-2127-422b-91ae-364da2661108
PatchThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.