CVE-2020-35680

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2020-35680
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-12-24 16:15:00 UTC
Updated2023-11-07 03:22:00 UTC
Descriptionsmtpd/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.

Risk And Classification

Problem Types: CWE-476

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 32 All All All
Operating System Fedoraproject Fedora 33 All All All
Application Opensmtpd Opensmtpd All All All All
Application Opensmtpd Opensmtpd 6.8.0 - All All
Application Opensmtpd Opensmtpd 6.8.0 patch1-rc1 All All
Application Opensmtpd Opensmtpd All All All All
Application Opensmtpd Opensmtpd 6.8.0 - All All
Application Opensmtpd Opensmtpd 6.8.0 patch1-rc1 All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 32 Update: opensmtpd-6.8.0p2-1.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
[SECURITY] Fedora 33 Update: opensmtpd-6.8.0p2-1.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 33 Update: opensmtpd-6.8.0p2-1.fc33 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
OpenSMTPD: Multiple vulnerabilities (GLSA 202105-12) — Gentoo security GENTOO security.gentoo.org
December 2020: OpenSMTPD 6.8.0p1 released, fixed several bugs, proposed several diffs, book is on Github - poolp.org MISC poolp.org Third Party Advisory
Announce: OpenSMTPD 6.8.0p1 released MISC www.mail-archive.com Release Notes, Third Party Advisory
[SECURITY] Fedora 32 Update: opensmtpd-6.8.0p2-1.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
Announce: OpenSMTPD 6.8.0p1 released www.mail-archive.com
smtpd's filter state machine can prematurely release resources · openbsd/src@6c32204 · GitHub MISC github.com Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 500483 Alpine Linux Security Update for opensmtpd
  • 501462 Alpine Linux Security Update for opensmtpd
  • 710103 Gentoo Linux OpenSMTPD Multiple vulnerabilities (GLSA 202105-12)
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report