Ubuntu 4.10 : php4 vulnerabilities (USN-99-1)

Critical Nessus Plugin ID 20725

Synopsis

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

Description

Stefano Di Paola discovered integer overflows in PHP's pack() and unpack() functions. A malicious PHP script could exploit these to break out of safe mode and execute arbitrary code with the privileges of the PHP interpreter. (CAN-2004-1018)

Note: The second part of CAN-2004-1018 (buffer overflow in the shmop_write() function) was already fixed in USN-66-1.

Stefan Esser discovered two safe mode bypasses which allowed malicious PHP scripts to circumvent path restrictions. This was possible by either using virtual_popen() with a current directory containing shell metacharacters (CAN-2004-1063) or creating a specially crafted directory whose length exceeded the capacity of the realpath() function (CAN-2004-1064).

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: 20725

File Name: ubuntu_USN-99-1.nasl

Version: Revision: 1.12

Type: local

Agent: unix

Published: 2006/01/15

Updated: 2016/05/25

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

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:libapache2-mod-php4, p-cpe:/a:canonical:ubuntu_linux:php4, p-cpe:/a:canonical:ubuntu_linux:php4-cgi, p-cpe:/a:canonical:ubuntu_linux:php4-curl, p-cpe:/a:canonical:ubuntu_linux:php4-dev, p-cpe:/a:canonical:ubuntu_linux:php4-domxml, p-cpe:/a:canonical:ubuntu_linux:php4-gd, p-cpe:/a:canonical:ubuntu_linux:php4-ldap, p-cpe:/a:canonical:ubuntu_linux:php4-mcal, p-cpe:/a:canonical:ubuntu_linux:php4-mhash, p-cpe:/a:canonical:ubuntu_linux:php4-mysql, p-cpe:/a:canonical:ubuntu_linux:php4-odbc, p-cpe:/a:canonical:ubuntu_linux:php4-pear, p-cpe:/a:canonical:ubuntu_linux:php4-recode, p-cpe:/a:canonical:ubuntu_linux:php4-snmp, p-cpe:/a:canonical:ubuntu_linux:php4-sybase, p-cpe:/a:canonical:ubuntu_linux:php4-xslt, cpe:/o:canonical:ubuntu_linux:4.10

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

Patch Publication Date: 2005/03/18

Reference Information

CVE: CVE-2004-1018, CVE-2004-1063, CVE-2004-1064

USN: 99-1