Debian DSA-2089-1 : php5 - several vulnerabilities

high Nessus Plugin ID 48384

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Synopsis

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

Description

Several remote vulnerabilities have been discovered in PHP 5, an hypertext preprocessor. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2010-1917 The fnmatch function can be abused to conduct denial of service attacks (by crashing the interpreter) by the means of a stack overflow.

- CVE-2010-2225 The SplObjectStorage unserializer allows attackers to execute arbitrary code via serialized data by the means of a use-after-free vulnerability.

- CVE-2010-3065 The default sessions serializer does not correctly handle a special marker, which allows an attacker to inject arbitrary variables into the session and possibly exploit vulnerabilities in the unserializer.

- CVE-2010-1128 For this vulnerability (predictable entropy for the Linear Congruential Generator used to generate session ids) we do not consider upstream's solution to be sufficient. It is recommended to uncomment the'session.entropy_file' and 'session.entropy_length' settings in the php.ini files. Further improvements can be achieved by setting'session.hash_function' to 1 (one) and incrementing the value of'session.entropy_length'.

Solution

Upgrade the php5 packages.

For the stable distribution (lenny), these problems have been fixed in version 5.2.6.dfsg.1-1+lenny9.

See Also

https://security-tracker.debian.org/tracker/CVE-2010-1917

https://security-tracker.debian.org/tracker/CVE-2010-2225

https://security-tracker.debian.org/tracker/CVE-2010-3065

https://security-tracker.debian.org/tracker/CVE-2010-1128

https://www.debian.org/security/2010/dsa-2089

Plugin Details

Severity: High

ID: 48384

File Name: debian_DSA-2089.nasl

Version: 1.15

Type: local

Agent: unix

Published: 8/23/2010

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:php5, cpe:/o:debian:debian_linux:5.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/6/2010

Reference Information

CVE: CVE-2010-1917, CVE-2010-2225, CVE-2010-3065

BID: 40948, 41991

DSA: 2089