Detections
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Fedora 31 : 1:dovecot (2020-b60344c987)

high Nessus Plugin ID 136938

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Synopsis

The remote Fedora host is missing a security update.

Description

- CVE-2020-10957: lmtp/submission: A client can crash the server by sending a NOOP command with an invalid string parameter. This occurs particularly for a parameter that doesn't start with a double quote. This applies to all SMTP services, including submission-login, which makes it possible to crash the submission service without authentication.

 - CVE-2020-10958: lmtp/submission: Sending many invalid or unknown commands can cause the server to access freed memory, which can lead to a server crash. This happens when the server closes the connection with a '421 Too many invalid commands' error. The bad command limit depends on the service (lmtp or submission) and varies between 10 to 20 bad commands.

 - CVE-2020-10967: lmtp/submission: Issuing the RCPT command with an address that has the empty quoted string as local-part causes the lmtp service to crash.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected 1:dovecot package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2020-b60344c987

Plugin Details

Severity: High

ID: 136938

File Name: fedora_2020-b60344c987.nasl

Version: 1.5

Type: local

Agent: unix

Published: 5/28/2020

Updated: 3/8/2024

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2020-10967

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2020-10957

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:1:dovecot, cpe:/o:fedoraproject:fedora:31

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/28/2020

Vulnerability Publication Date: 5/18/2020

Reference Information

CVE: CVE-2020-10957, CVE-2020-10958, CVE-2020-10967