openSUSE 15 Security Update : dovecot23 (openSUSE-SU-2021:2892-1)

medium Nessus Plugin ID 152941

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Synopsis

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

Description

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:2892-1 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 this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 152941

File Name: openSUSE-2021-2892.nasl

Version: 1.2

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 9/1/2021

Updated: 9/1/2021

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, 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:opensuse:dovecot23-devel, cpe:/o:novell:opensuse:15.3, p-cpe:/a:novell:opensuse:dovecot23-fts, p-cpe:/a:novell:opensuse:dovecot23, p-cpe:/a:novell:opensuse:dovecot23-backend-sqlite, p-cpe:/a:novell:opensuse:dovecot23-backend-mysql, p-cpe:/a:novell:opensuse:dovecot23-backend-pgsql, p-cpe:/a:novell:opensuse:dovecot23-fts-solr, p-cpe:/a:novell:opensuse:dovecot23-fts-lucene, p-cpe:/a:novell:opensuse:dovecot23-fts-squat

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

Detections

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