Ubuntu 4.10 / 5.04 : apache2, libapache-mod-ssl vulnerabilities (USN-177-1)

critical Nessus Plugin ID 20587

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

Apache did not honour the 'SSLVerifyClient require' directive within a <Location> block if the surrounding <VirtualHost> block contained a directive 'SSLVerifyClient optional'. This allowed clients to bypass client certificate validation on servers with the above configuration.
(CAN-2005-2700)

Filip Sneppe discovered a Denial of Service vulnerability in the byte range filter handler. By requesting certain large byte ranges, a remote attacker could cause memory exhaustion in the server.
(CAN-2005-2728)

The updated libapache-mod-ssl also fixes two older Denial of Service vulnerabilities: A format string error in the ssl_log() function which could be exploited to crash the server (CAN-2004-0700), and a flaw in the SSL cipher negotiation which could be exploited to terminate a session (CAN-2004-0885). Please note that Apache 1.3 and libapache-mod-ssl are not officially supported (they are in the 'universe' component of the Ubuntu archive).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 20587

File Name: ubuntu_USN-177-1.nasl

Version: 1.15

Type: local

Agent: unix

Family: Ubuntu Local Security Checks

Published: 1/15/2006

Updated: 1/19/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

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

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:apache2-common, p-cpe:/a:canonical:ubuntu_linux:libapache-mod-ssl-doc, p-cpe:/a:canonical:ubuntu_linux:libapr0-dev, cpe:/o:canonical:ubuntu_linux:5.04, p-cpe:/a:canonical:ubuntu_linux:apache2-utils, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-prefork, p-cpe:/a:canonical:ubuntu_linux:apache2, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-worker, p-cpe:/a:canonical:ubuntu_linux:apache2-doc, p-cpe:/a:canonical:ubuntu_linux:apache2-threaded-dev, p-cpe:/a:canonical:ubuntu_linux:apache2-prefork-dev, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-threadpool, cpe:/o:canonical:ubuntu_linux:4.10, p-cpe:/a:canonical:ubuntu_linux:apache2-mpm-perchild, p-cpe:/a:canonical:ubuntu_linux:libapr0, p-cpe:/a:canonical:ubuntu_linux:libapache-mod-ssl

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

Patch Publication Date: 9/7/2005

Reference Information

CVE: CVE-2004-0700, CVE-2004-0885, CVE-2005-2700, CVE-2005-2728

USN: 177-1

Detections

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