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Debian DLA-2328-1 : dovecot security update
high Nessus Plugin ID 139626
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Synopsis
The remote Debian host is missing a security update.Description
Several vulnerabilities have been discovered in the Dovecot email server.CVE-2020-12100
Receiving mail with deeply nested MIME parts leads to resource exhaustion as Dovecot attempts to parse it.
CVE-2020-12673
Dovecot's NTLM implementation does not correctly check message buffer size, which leads to a crash when reading past allocation.
CVE-2020-12674
Dovecot's RPA mechanism implementation accepts zero-length message, which leads to assert-crash later on.
For Debian 9 stretch, these problems have been fixed in version 1:2.2.27-3+deb9u6.
We recommend that you upgrade your dovecot packages.
For the detailed security status of dovecot please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/dovecot
NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
Solution
Upgrade the affected packages.See Also
https://lists.debian.org/debian-lts-announce/2020/08/msg00024.html
https://packages.debian.org/source/stretch/dovecot
https://security-tracker.debian.org/tracker/source-package/dovecot
Plugin Details
Severity: High
ID: 139626
File Name: debian_DLA-2328.nasl
Version: 1.3
Type: local
Agent: unix
Family: Debian Local Security Checks
Published: 8/18/2020
Updated: 2/26/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, 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-2020-12674
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
Vulnerability Information
CPE: p-cpe:/a:debian:debian_linux:dovecot-dbg, p-cpe:/a:debian:debian_linux:dovecot-lmtpd, p-cpe:/a:debian:debian_linux:dovecot-pgsql, p-cpe:/a:debian:debian_linux:dovecot-sqlite, p-cpe:/a:debian:debian_linux:dovecot-pop3d, p-cpe:/a:debian:debian_linux:dovecot-gssapi, p-cpe:/a:debian:debian_linux:dovecot-lucene, p-cpe:/a:debian:debian_linux:dovecot-managesieved, p-cpe:/a:debian:debian_linux:dovecot-sieve, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:dovecot-dev, p-cpe:/a:debian:debian_linux:dovecot-core, p-cpe:/a:debian:debian_linux:dovecot-ldap, p-cpe:/a:debian:debian_linux:dovecot-mysql, p-cpe:/a:debian:debian_linux:dovecot-imapd, p-cpe:/a:debian:debian_linux:dovecot-solr
Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 8/15/2020
Vulnerability Publication Date: 8/12/2020