SB2019040310 - Fedora 29 update for httpd

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Main Vulnerability Database SB2019040310

SB2019040310 - Fedora 29 update for httpd

Published: April 3, 2019 Updated: April 24, 2025

Security Bulletin ID SB2019040310
Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 25% Low 75%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 secuirty vulnerabilities.


1) Privilege escalation (CVE-ID: CVE-2019-0211)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists within MPM implementation due to the application does not properly maintain each child's listener bucket number in the scoreboard that may lead to unprivileged code or scripts run by server (e.g. via mod_php) to modify the scoreboard and abuse the privileged main process.

A local user can execute arbitrary code on the system with privileges of the Apache HTTP Server code process.


2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-0215)

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists within the mod_ssl module when processing access controls for per-location/per-dir client certificate verification in TLSv1.3. A remote authenticated attacker can gain access to restricted directories on the server.


3) Race condition (CVE-ID: CVE-2019-0217)

The vulnerability allows a remote authenticated user to impersonate other users.

The vulnerability exists due to a race condition within the mod_auth_digests module. A remote authenticated attacker can send a series of requests and impersonate other users under a threaded MPM.

4) Input validation error (CVE-ID: CVE-2019-0220)

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to the web server does not merge consecutive slashes in URLs, that can lead to incorrect processing of requests when accessing CGI programs. Such web server behavior may lead to security restrictions bypass.


Remediation

Install update from vendor's website.

References