SUSE SLES15 Security Update : dovecot23 (SUSE-SU-2021:2891-1)

medium Nessus Plugin ID 152947

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2891-1 advisory.

- The Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumption, as demonstrated by a situation with a complex regular expression for the regex extension. (CVE-2020-28200)

- Dovecot before 2.3.15 allows ../ Path Traversal. An attacker with access to the local filesystem can trick OAuth2 authentication into using an HS256 validation key from an attacker-controlled location. This occurs during use of local JWT validation with the posix fs driver. (CVE-2021-29157)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 152947

File Name: suse_SU-2021-2891-1.nasl

Version: 1.4

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 9/1/2021

Updated: 7/13/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2021-29157

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:dovecot23, p-cpe:/a:novell:suse_linux:dovecot23-backend-mysql, p-cpe:/a:novell:suse_linux:dovecot23-backend-pgsql, p-cpe:/a:novell:suse_linux:dovecot23-backend-sqlite, p-cpe:/a:novell:suse_linux:dovecot23-devel, p-cpe:/a:novell:suse_linux:dovecot23-fts, p-cpe:/a:novell:suse_linux:dovecot23-fts-lucene, p-cpe:/a:novell:suse_linux:dovecot23-fts-solr, p-cpe:/a:novell:suse_linux:dovecot23-fts-squat, cpe:/o:novell:suse_linux:15

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/31/2021

Vulnerability Publication Date: 6/28/2021

Reference Information

CVE: CVE-2020-28200, CVE-2021-29157

SuSE: SUSE-SU-2021:2891-1

Detections

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