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redhatRedHatRHSA-2005:406
HistoryMay 04, 2005 - 12:00 a.m.

(RHSA-2005:406) PHP security update

2005-05-0400:00:00
access.redhat.com
20

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.144 Low

EPSS

Percentile

95.2%

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.

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.144 Low

EPSS

Percentile

95.2%

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