RHEL 6 : php53 and php (RHSA-2011:1423)

critical Nessus Plugin ID 56699

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Synopsis

The remote Red Hat host is missing one or more security updates for php53 / php.

Description

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2011:1423 advisory.

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server.

A signedness issue was found in the way the PHP crypt() function handled 8-bit characters in passwords when using Blowfish hashing. Up to three characters immediately preceding a non-ASCII character (one with the high bit set) had no effect on the hash result, thus shortening the effective password length. This made brute-force guessing more efficient as several different passwords were hashed to the same value. (CVE-2011-2483)

Note: Due to the CVE-2011-2483 fix, after installing this update some users may not be able to log in to PHP applications that hash passwords with Blowfish using the PHP crypt() function. Refer to the upstream CRYPT_BLOWFISH security fix details document, linked to in the References, for details.

An insufficient input validation flaw, leading to a buffer over-read, was found in the PHP exif extension. A specially-crafted image file could cause the PHP interpreter to crash when a PHP script tries to extract Exchangeable image file format (Exif) metadata from the image file.
(CVE-2011-0708)

An integer overflow flaw was found in the PHP calendar extension. A remote attacker able to make a PHP script call SdnToJulian() with a large value could cause the PHP interpreter to crash. (CVE-2011-1466)

Multiple memory leak flaws were found in the PHP OpenSSL extension. A remote attacker able to make a PHP script use openssl_encrypt() or openssl_decrypt() repeatedly could cause the PHP interpreter to use an excessive amount of memory. (CVE-2011-1468)

A use-after-free flaw was found in the PHP substr_replace() function. If a PHP script used the same variable as multiple function arguments, a remote attacker could possibly use this to crash the PHP interpreter or, possibly, execute arbitrary code. (CVE-2011-1148)

A bug in the PHP Streams component caused the PHP interpreter to crash if an FTP wrapper connection was made through an HTTP proxy. A remote attacker could possibly trigger this issue if a PHP script accepted an untrusted URL to connect to. (CVE-2011-1469)

An integer signedness issue was found in the PHP zip extension. An attacker could use a specially-crafted ZIP archive to cause the PHP interpreter to use an excessive amount of CPU time until the script execution time limit is reached. (CVE-2011-1471)

A stack-based buffer overflow flaw was found in the way the PHP socket extension handled long AF_UNIX socket addresses. An attacker able to make a PHP script connect to a long AF_UNIX socket address could use this flaw to crash the PHP interpreter. (CVE-2011-1938)

An off-by-one flaw was found in PHP. If an attacker uploaded a file with a specially-crafted file name it could cause a PHP script to attempt to write a file to the root (/) directory. By default, PHP runs as the apache user, preventing it from writing to the root directory. (CVE-2011-2202)

All php53 and php users should upgrade to these updated packages, which contain backported patches to resolve these issues. After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Solution

Update the RHEL php53 / php packages based on the guidance in RHSA-2011:1423.

Plugin Details

Severity: Critical

ID: 56699

File Name: redhat-RHSA-2011-1423.nasl

Version: 1.22

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/3/2011

Updated: 4/14/2025

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

Risk Information

VPR

Risk Factor: High

Score: 7.3

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2011-1938

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 9

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

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

CVSS Score Source: CVE-2011-2483

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:php-pspell, p-cpe:/a:redhat:enterprise_linux:php53-ldap, p-cpe:/a:redhat:enterprise_linux:php-zts, p-cpe:/a:redhat:enterprise_linux:php53-pspell, p-cpe:/a:redhat:enterprise_linux:php53-cli, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:php-embedded, p-cpe:/a:redhat:enterprise_linux:php-mysql, p-cpe:/a:redhat:enterprise_linux:php53-soap, p-cpe:/a:redhat:enterprise_linux:php53-common, p-cpe:/a:redhat:enterprise_linux:php53-mbstring, p-cpe:/a:redhat:enterprise_linux:php-xml, p-cpe:/a:redhat:enterprise_linux:php-bcmath, p-cpe:/a:redhat:enterprise_linux:php-cli, p-cpe:/a:redhat:enterprise_linux:php-devel, p-cpe:/a:redhat:enterprise_linux:php53-odbc, p-cpe:/a:redhat:enterprise_linux:php-enchant, p-cpe:/a:redhat:enterprise_linux:php53-pgsql, p-cpe:/a:redhat:enterprise_linux:php53-devel, p-cpe:/a:redhat:enterprise_linux:php, p-cpe:/a:redhat:enterprise_linux:php53-bcmath, p-cpe:/a:redhat:enterprise_linux:php-tidy, p-cpe:/a:redhat:enterprise_linux:php-recode, cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:php-gd, p-cpe:/a:redhat:enterprise_linux:php-snmp, p-cpe:/a:redhat:enterprise_linux:php-ldap, p-cpe:/a:redhat:enterprise_linux:php53-snmp, p-cpe:/a:redhat:enterprise_linux:php53-mysql, p-cpe:/a:redhat:enterprise_linux:php53-xml, p-cpe:/a:redhat:enterprise_linux:php-imap, p-cpe:/a:redhat:enterprise_linux:php-odbc, p-cpe:/a:redhat:enterprise_linux:php-xmlrpc, p-cpe:/a:redhat:enterprise_linux:php53-intl, p-cpe:/a:redhat:enterprise_linux:php53-pdo, p-cpe:/a:redhat:enterprise_linux:php-mbstring, p-cpe:/a:redhat:enterprise_linux:php53-dba, p-cpe:/a:redhat:enterprise_linux:php53-imap, p-cpe:/a:redhat:enterprise_linux:php-common, p-cpe:/a:redhat:enterprise_linux:php-intl, p-cpe:/a:redhat:enterprise_linux:php-soap, p-cpe:/a:redhat:enterprise_linux:php53-gd, p-cpe:/a:redhat:enterprise_linux:php53-xmlrpc, p-cpe:/a:redhat:enterprise_linux:php53-process, p-cpe:/a:redhat:enterprise_linux:php-pdo, p-cpe:/a:redhat:enterprise_linux:php-dba, p-cpe:/a:redhat:enterprise_linux:php53, p-cpe:/a:redhat:enterprise_linux:php-pgsql, p-cpe:/a:redhat:enterprise_linux:php-process

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 11/2/2011

Vulnerability Publication Date: 3/18/2011

Reference Information

CVE: CVE-2011-0708, CVE-2011-1148, CVE-2011-1466, CVE-2011-1468, CVE-2011-1469, CVE-2011-1471, CVE-2011-1938, CVE-2011-2202, CVE-2011-2483

BID: 46365, 46843, 46967, 46970, 46975, 46977, 47950, 48259, 49241

CWE: 121, 401, 416

RHSA: 2011:1423

Detections

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