opensmtpd vulnerabilities

2021-03-1523:06:41

Google

osv.dev

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

7.5 High

AI Score

Confidence

Low

10 High

CVSS2

Access Vector

NETWORK

Access 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

0.975 High

EPSS

Percentile

100.0%

JSON

It was discovered that OpenSMTPD incorrectly verified the sender’s or
receiver’s e-mail addresses under certain conditions. An attacker could
possibly use this vulnerability to execute arbitrary commands as root.
(CVE-2020-7247)

It was discovered that OpenSMTPD did not properly handle hardlinks under
certain conditions. An unprivileged local attacker could possibly use this
issue to obtain sensitive information. This issue only affected Ubuntu
16.04 ESM. (CVE-2020-8793)

It was discovered that OpenSMTPD mishandled certain input. A remote,
unauthenticated attacker could possibly use this vulnerability to execute
arbitrary shell commands as any non-root user. This issue only affected
Ubuntu 16.04 ESM. (CVE-2020-8794)