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.
References
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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History
07 Nov 2023, 03:22
Type | Values Removed | Values Added |
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References |
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02 Sep 2022, 03:47
Type | Values Removed | Values Added |
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References | (GENTOO) https://security.gentoo.org/glsa/202105-12 - Third Party Advisory |
26 May 2021, 10:15
Type | Values Removed | Values Added |
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References |
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26 Mar 2021, 02:03
Type | Values Removed | Values Added |
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References | (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5LKTFBQCHGMVPR4IZWHQIYAPM5J3LN3J/ - Mailing List, Third Party Advisory | |
References | (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TYAYXRV2DM5K4RU7RHCDZSA2UF6VCTRC/ - Mailing List, Third Party Advisory | |
CPE | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* |
30 Jan 2021, 04:15
Type | Values Removed | Values Added |
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References |
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29 Dec 2020, 18:42
Type | Values Removed | Values Added |
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CWE | CWE-476 | |
CPE | cpe:2.3:a:opensmtpd:opensmtpd:6.8.0:patch1-rc1:*:*:*:*:*:* cpe:2.3:a:opensmtpd:opensmtpd:*:*:*:*:*:*:*:* cpe:2.3:a:opensmtpd:opensmtpd:6.8.0:-:*:*:*:*:*:* |
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CVSS |
v2 : v3 : |
v2 : 5.0
v3 : 7.5 |
References | (MISC) https://github.com/openbsd/src/commit/6c3220444ed06b5796dedfd53a0f4becd903c0d1 - Patch, Third Party Advisory | |
References | (MISC) 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 | |
References | (MISC) https://www.mail-archive.com/misc@opensmtpd.org/msg05188.html - Release Notes, Third Party Advisory |
Information
Published : 2020-12-24 16:15
Updated : 2023-12-10 13:41
NVD link : CVE-2020-35680
Mitre link : CVE-2020-35680
CVE.ORG link : CVE-2020-35680
JSON object : View
Products Affected
fedoraproject
- fedora
opensmtpd
- opensmtpd
CWE
CWE-476
NULL Pointer Dereference