CVE-2020-8794

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Summary

CVECVE-2020-8794
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-02-25 17:15:00 UTC
Updated2023-11-07 03:26:00 UTC
DescriptionOpenSMTPD before 6.6.4 allows remote code execution because of an out-of-bounds read in mta_io in mta_session.c for multi-line replies. Although this vulnerability affects the client side of OpenSMTPD, it is possible to attack a server because the server code launches the client code during bounce handling.

Risk And Classification

Problem Types: CWE-125

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Canonical Ubuntu Linux 18.04 All All All
Operating System Canonical Ubuntu Linux 19.10 All All All
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 9.0 All All All
Operating System Fedoraproject Fedora 31 All All All
Operating System Fedoraproject Fedora 32 All All All
Application Opensmtpd Opensmtpd All All All All
Application Opensmtpd Opensmtpd All All All All

References

ReferenceSourceLinkTags
oss-security - Re: LPE and RCE in OpenSMTPD's default install (CVE-2020-8794) MLIST www.openwall.com
oss-security - 21Nails: Multiple vulnerabilities in Exim MLIST www.openwall.com
Debian -- Security Information -- DSA-4634-1 opensmtpd DEBIAN www.debian.org
USN-4294-1: OpenSMTPD vulnerabilities | Ubuntu security notices | Ubuntu UBUNTU usn.ubuntu.com
OpenSMTPD Out-Of-Bounds Read / Local Privilege Escalation ≈ Packet Storm MISC packetstormsecurity.com
oss-security - Re: LPE and RCE in OpenSMTPD's default install (CVE-2020-8794) MLIST www.openwall.com
[SECURITY] Fedora 32 Update: opensmtpd-6.6.4p1-2.fc32 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
[SECURITY] Fedora 32 Update: opensmtpd-6.6.4p1-2.fc32 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
Full Disclosure: LPE and RCE in OpenSMTPD's default install (CVE-2020-8794) FULLDISC seclists.org
oss-security - Re: LPE and RCE in OpenSMTPD's default install (CVE-2020-8794) MLIST www.openwall.com
OpenBSD Security MISC www.openbsd.org Third Party Advisory
oss-security - LPE and RCE in OpenSMTPD's default install (CVE-2020-8794) MISC www.openwall.com Exploit, Mailing List, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 501653 Alpine Linux Security Update for opensmtpd-extras
  • 505194 Alpine Linux Security Update for opensmtpd-extras
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