SB2020072883 - Ubuntu update for sympa

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Main Vulnerability Database SB2020072883

SB2020072883 - Ubuntu update for sympa

Published: July 28, 2020 Updated: April 23, 2025

Security Bulletin ID SB2020072883
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Path traversal (CVE-ID: CVE-2018-1000550)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to create or modify files on the filesystem.

The vulnerability exists due to input validation error when processing directory traversal sequences in wwsympa.fcgi when editing templates. A remote authenticated attacker can send a specially crafted HTTP GET or POST request and edit or create files on the system outside the webroot directory.


2) Cross-site scripting (CVE-ID: CVE-2018-1000671)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data when processing data passed via Victim's browser must follow a URL supplied by the attacker. This vulnerability appears to have been fixed in none available. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.


3) Improper Privilege Management (CVE-ID: CVE-2020-10936)

CWE-ID: CWE-269 - Improper Privilege Management

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local authenticated user to escalate privileges.

The vulnerability exists due to improper management of privileges within the application. A local user can gain elevated privileges via unknown vectors.


Remediation

Install update from vendor's website.

References