CVE-2020-8794

Published: Feb 25, 2020Modified: Nov 21, 2024

9.8

Vector

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

Exploitability: 3.9 / Impact: 5.9

Source: NVD

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 (7)

Products: Opensmtpd: Opensmtpd · Canonical: Ubuntu Linux · Fedoraproject: Fedora · +1 more

Show all products

Opensmtpd: Opensmtpd · Canonical: Ubuntu Linux · Fedoraproject: Fedora · Debian: Debian Linux

1 product

1 product

1 product

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Opensmtpd Opensmtpd	Before 6.6.4

Configuration B

2 vulnerable

Vulnerable Software	Affected Versions
Canonical Ubuntu Linux	Version 18.04
Canonical Ubuntu Linux	Version 19.10

Configuration C

2 vulnerable

Vulnerable Software	Affected Versions
Fedoraproject Fedora	Version 31
Fedoraproject Fedora	Version 32

Configuration D

2 vulnerable

Vulnerable Software	Affected Versions
Debian Debian Linux	Version 10.0
Debian Debian Linux	Version 9.0

Related CWEs

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (22)

http://packetstormsecurity.com/files/156633/OpenSMTPD-Out-Of-Bounds-Read-Local-Privilege-Escalation.html

Source: cve@mitre.org

ExploitThird Party AdvisoryVDB Entry

http://seclists.org/fulldisclosure/2020/Feb/32

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2020/02/26/1

Source: cve@mitre.org

ExploitMailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2020/03/01/1

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2020/03/01/2

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/05/04/7

Source: cve@mitre.org

ExploitMailing ListThird Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/

Source: cve@mitre.org

https://usn.ubuntu.com/4294-1/

Source: cve@mitre.org

PatchThird Party Advisory

https://www.debian.org/security/2020/dsa-4634

Source: cve@mitre.org

Third Party Advisory

https://www.openbsd.org/security.html

Source: cve@mitre.org

Third Party Advisory

https://www.openwall.com/lists/oss-security/2020/02/24/5

Source: cve@mitre.org

ExploitMailing ListThird Party Advisory

http://packetstormsecurity.com/files/156633/OpenSMTPD-Out-Of-Bounds-Read-Local-Privilege-Escalation.html

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitThird Party AdvisoryVDB Entry

http://seclists.org/fulldisclosure/2020/Feb/32

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2020/02/26/1

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitMailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2020/03/01/1

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2020/03/01/2

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2021/05/04/7

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitMailing ListThird Party Advisory

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/

Source: af854a3a-2127-422b-91ae-364da2661108

https://usn.ubuntu.com/4294-1/

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

https://www.debian.org/security/2020/dsa-4634

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.openbsd.org/security.html

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.openwall.com/lists/oss-security/2020/02/24/5

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitMailing ListThird Party Advisory

Timeline

No history available yet.