Description
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
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://www.openbsd.org/security.html ↗
- https://www.openwall.com/lists/oss-security/2020/02/24/5 ↗
- http://www.openwall.com/lists/oss-security/2020/02/26/1 ↗
- https://www.debian.org/security/2020/dsa-4634 ↗
- http://seclists.org/fulldisclosure/2020/Feb/32 ↗
- http://www.openwall.com/lists/oss-security/2020/03/01/1 ↗
- http://www.openwall.com/lists/oss-security/2020/03/01/2 ↗
- http://packetstormsecurity.com/files/156633/OpenSMTPD-Out-Of-Bounds-Read-Local-Privilege-Escalation.html ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/ ↗
- https://usn.ubuntu.com/4294-1/ ↗
- http://www.openwall.com/lists/oss-security/2021/05/04/7 ↗