Debian DLA-2441-1 : sympa security update

high Nessus Plugin ID 142670

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Synopsis

The remote Debian host is missing a security update.

Description

A privilege escalation was discovered in Sympa, a modern mailing list manager. It is fixed when Sympa is used in conjunction with common MTAs (such as Exim or Postfix) by disabling a setuid executable, although no fix is currently available for all environments (such as sendmail). Additionally, an open-redirect vulnerability was discovered and fixed.

CVE-2020-26880

Sympa allows a local privilege escalation from the sympa user account to full root access by modifying the sympa.conf configuration file (which is owned by sympa) and parsing it through the setuid sympa_newaliases-wrapper executable.

CVE-2018-1000671

Sympa contains a CWE-601: URL Redirection to Untrusted Site ('Open Redirect') vulnerability in The 'referer' parameter of the wwsympa.fcgi login action. that can result in Open redirection and reflected XSS via data URIs.

For Debian 9 stretch, these problems have been fixed in version 6.2.16~dfsg-3+deb9u4.

We recommend that you upgrade your sympa packages.

For the detailed security status of sympa please refer to its security tracker page at: https://security-tracker.debian.org/tracker/sympa

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 sympa package.

Plugin Details

Severity: High

ID: 142670

File Name: debian_DLA-2441.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 11/10/2020

Updated: 11/20/2020

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2020-26880

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:sympa, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 11/9/2020

Vulnerability Publication Date: 9/6/2018

Reference Information

CVE: CVE-2018-1000671, CVE-2020-26880

Detections

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