CVE-2020-8794

CRITICAL

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/25/2020

Last Modified11/21/2024

Sourcenvd

Honeypot Sightings0

Affected Products

canonical:ubuntu_linuxdebian:debian_linuxfedoraproject:fedoraopensmtpd:opensmtpd

Weaknesses (CWE)

CWE-125

References

http://packetstormsecurity.com/files/156633/OpenSMTPD-Out-Of-Bounds-Read-Local-Privilege-Escalation.html(cve@mitre.org)

http://seclists.org/fulldisclosure/2020/Feb/32(cve@mitre.org)

http://www.openwall.com/lists/oss-security/2020/02/26/1(cve@mitre.org)

http://www.openwall.com/lists/oss-security/2020/03/01/1(cve@mitre.org)

http://www.openwall.com/lists/oss-security/2020/03/01/2(cve@mitre.org)

http://www.openwall.com/lists/oss-security/2021/05/04/7(cve@mitre.org)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/(cve@mitre.org)

https://usn.ubuntu.com/4294-1/(cve@mitre.org)

https://www.debian.org/security/2020/dsa-4634(cve@mitre.org)

https://www.openbsd.org/security.html(cve@mitre.org)

https://www.openwall.com/lists/oss-security/2020/02/24/5(cve@mitre.org)

http://packetstormsecurity.com/files/156633/OpenSMTPD-Out-Of-Bounds-Read-Local-Privilege-Escalation.html(af854a3a-2127-422b-91ae-364da2661108)

http://seclists.org/fulldisclosure/2020/Feb/32(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2020/02/26/1(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2020/03/01/1(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2020/03/01/2(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2021/05/04/7(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/(af854a3a-2127-422b-91ae-364da2661108)

https://usn.ubuntu.com/4294-1/(af854a3a-2127-422b-91ae-364da2661108)

https://www.debian.org/security/2020/dsa-4634(af854a3a-2127-422b-91ae-364da2661108)

https://www.openbsd.org/security.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.openwall.com/lists/oss-security/2020/02/24/5(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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