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CVE-2020-8794

CVE-2020-8794

EPSS 88.5%
OpenSMTPD 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.
Affected products
n/a · n/a
public PoCs found — 3
cve_referencepacketstormsecurity.com/files/156633/OpenSMTPD-Out-Of-Bounds-Read-Local-Privilege-Escalation.htmlunverifiedexploitdbwww.exploit-db.com/exploits/48185unverifiedexploitdbwww.exploit-db.com/exploits/48140unverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
http://packetstormsecurity.com/files/156633/OpenSMTPD-Out-Of-Bounds-Read-Local-Privilege-Escalation.htmlhttp://seclists.org/fulldisclosure/2020/Feb/32https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/https://usn.ubuntu.com/4294-1/https://www.debian.org/security/2020/dsa-4634https://www.openbsd.org/security.htmlhttps://www.openwall.com/lists/oss-security/2020/02/24/5http://www.openwall.com/lists/oss-security/2020/02/26/1http://www.openwall.com/lists/oss-security/2020/03/01/1http://www.openwall.com/lists/oss-security/2020/03/01/2http://www.openwall.com/lists/oss-security/2021/05/04/7