PHP 4.0 with cURL functions allows remote attackers to bypass the open_basedir setting and read arbitrary files via a file: URL argument to the curl_init function.

Updated PHP packages that fix various security issues are now available.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

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

A bug was found in the way PHP processes IFF and JPEG images. It is possible to cause PHP to consume CPU resources for a short period of time by supplying a carefully crafted IFF or JPEG image. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2005-0524 and CVE-2005-0525 to these issues.

A buffer overflow bug was also found in the way PHP processes EXIF image headers. It is possible for an attacker to construct an image file in such a way it could execute arbitrary instructions when processed by PHP. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-1042 to this issue.

A denial of service bug was found in the way PHP processes EXIF image headers. It is possible for an attacker to cause PHP to enter an infinite loop for a short period of time by supplying a carefully crafted image file to PHP for processing. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-1043 to this issue.

Several bug fixes are also included in this update :

  - some performance issues in the unserialize() function     have been fixed

  - the behaviour of the interpreter when handling integer     overflow during conversion of a floating variable to an     integer has been reverted to match the behaviour used     upstream; the integer will now be wrapped rather than     truncated

  - a fix for the virtual() function in the Apache httpd     module which would flush the response prematurely

  - the hard-coded default 'safe mode' setting is now     'disabled' rather than 'enabled'; to match the default     /etc/php.ini setting

  - in the curl extension, safe mode was not enforced for     'file:///' URL lookups (CVE-2004-1392).

Users of PHP should upgrade to these updated packages, which contain backported fixes for these issues.

Updated PHP packages that fix various security issues are now available.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

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

A bug was found in the way PHP processes IFF and JPEG images. It is possible to cause PHP to consume CPU resources for a short period of time by supplying a carefully crafted IFF or JPEG image. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2005-0524 and CVE-2005-0525 to these issues.

A buffer overflow bug was also found in the way PHP processes EXIF image headers. It is possible for an attacker to construct an image file in such a way that it could execute arbitrary instructions when processed by PHP. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-1042 to this issue.

A denial of service bug was found in the way PHP processes EXIF image headers. It is possible for an attacker to cause PHP to enter an infinite loop for a short period of time by supplying a carefully crafted image file to PHP for processing. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-1043 to this issue.

Several bug fixes are also included in this update :

  - The security fixes in RHSA-2004-687 to the     'unserializer' code introduced some performance issues.

  - In the gd extension, the 'imagecopymerge' function did     not correctly handle transparency. The original image     was being obscured in the resultant image.

  - In the curl extension, safe mode was not enforced for     'file:///' URL lookups (CVE-2004-1392).

Users of PHP should upgrade to these updated packages, which contain backported fixes for these issues.

The remote Redhat Enterprise Linux 4 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2005:406 advisory.

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

    A bug was found in the way PHP processes IFF and JPEG images. It is     possible to cause PHP to consume CPU resources for a short period of time     by supplying a carefully crafted IFF or JPEG image. The Common     Vulnerabilities and Exposures project (cve.mitre.org) has assigned the     names CAN-2005-0524 and CAN-2005-0525 to these issues.

    A buffer overflow bug was also found in the way PHP processes EXIF image     headers. It is possible for an attacker to construct an image file in such     a way it could execute arbitrary instructions when processed by PHP. The     Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned     the name CAN-2005-1042 to this issue.

    A denial of service bug was found in the way PHP processes EXIF image     headers. It is possible for an attacker to cause PHP to enter an infinite     loop for a short period of time by supplying a carefully crafted image file     to PHP for processing. The Common Vulnerabilities and Exposures project     (cve.mitre.org) has assigned the name CAN-2005-1043 to this issue.

    Several bug fixes are also included in this update:

    - some performance issues in the unserialize() function have been fixed

    - the behaviour of the interpreter when handling integer overflow during     conversion of a floating variable to an integer has been reverted to match     the behaviour used upstream; the integer will now be wrapped rather than     truncated

    - a fix for the virtual() function in the Apache httpd module which would     flush the response prematurely

    - the hard-coded default safe mode setting is now disabled rather than     enabled; to match the default /etc/php.ini setting

    - in the curl extension, safe mode was not enforced for 'file:///' URL     lookups (CAN-2004-1392).

    Users of PHP should upgrade to these updated packages, which contain     backported fixes for these issues.

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.

ID	Name	Product	Family	Severity
23981	CentOS 4 : PHP (CESA-2005:406)	Nessus	CentOS Local Security Checks	high
21818	CentOS 3 : PHP (CESA-2005:405)	Nessus	CentOS Local Security Checks	high
18198	RHEL 4 : PHP (RHSA-2005:406)	Nessus	Red Hat Local Security Checks	high
18163	RHEL 3 : PHP (RHSA-2005:405)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2004-1392

high

Tenable Plugins

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high

high

high