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cve[email protected]CVE-2020-8794
HistoryFeb 25, 2020 - 5:15 p.m.

CVE-2020-8794

2020-02-2517:15:13
CWE-125
[email protected]
web.nvd.nist.gov
169
In Wild
3
opensmtpd
cve-2020-8794
remote code execution
out-of-bounds read
server
nvd

10 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.4 High

AI Score

Confidence

High

0.94 High

EPSS

Percentile

99.2%

JSON

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 configurations

NVD
Node
opensmtpdopensmtpdRange<6.6.4
Node
canonicalubuntu_linuxMatch18.04lts
OR
canonicalubuntu_linuxMatch19.10
Node
fedoraprojectfedoraMatch31
OR
fedoraprojectfedoraMatch32
Node
debiandebian_linuxMatch9.0
OR
debiandebian_linuxMatch10.0
CPENameOperatorVersion
opensmtpd:opensmtpdopensmtpdlt6.6.4

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10 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.4 High

AI Score

Confidence

High

0.94 High

EPSS

Percentile

99.2%

JSON
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