Debian dla-3751 : libapache2-mod-auth-openidc - security update

high Nessus Plugin ID 191563

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 10 host has a package installed that is affected by a vulnerability as referenced in the dla-3751 advisory.

- ------------------------------------------------------------------------- Debian LTS Advisory DLA-3751-1 [email protected] https://www.debian.org/lts/security/ Chris Lamb March 05, 2024 https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package : libapache2-mod-auth-openidc Version : 2.3.10.2-1+deb10u4 CVE ID : CVE-2024-24814 Debian Bug : 1064183

It was discovered that there was a potential Denial of Service (DoS) attack in libapache2-mod-auth-openidc, an OpenID Connect (OpenIDC) module for the Apache web server.

Missing input validation on mod_auth_openidc_session_chunks cookie value made the server vulnerable to this attack. If an attacker manipulated the value of the OpenIDC cookie to a very large integer like 99999999, the server struggled with the request for a long time and finally returned a 500 error. Making a few requests of this kind caused servers to become unresponsive, and so attackers could thereby craft requests that would make the server work very hard and/or crash with minimal effort.

For Debian 10 buster, this problem has been fixed in version 2.3.10.2-1+deb10u4.

We recommend that you upgrade your libapache2-mod-auth-openidc packages.

For the detailed security status of libapache2-mod-auth-openidc please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/libapache2-mod-auth-openidc

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

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

Solution

Upgrade the libapache2-mod-auth-openidc packages.

Plugin Details

Severity: High

ID: 191563

File Name: debian_DLA-3751.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 3/5/2024

Updated: 1/22/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2024-24814

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:libapache2-mod-auth-openidc

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/5/2024

Vulnerability Publication Date: 2/13/2024

Reference Information

CVE: CVE-2024-24814

IAVB: 2024-B-0075

Detections

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