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Gentoo Linux Security Advisory GLSA 200811-05 |
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http://security.gentoo.org/ |
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Severity: Normal |
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Title: PHP: Multiple vulnerabilities |
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Date: November 16, 2008 |
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Bugs: #209148, #212211, #215266, #228369, #230575, #234102 |
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ID: 200811-05 |
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Synopsis |
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======== |
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|
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PHP contains several vulnerabilities including buffer and integer |
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overflows which could lead to the remote execution of arbitrary code. |
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|
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Background |
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========== |
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|
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PHP is a widely-used general-purpose scripting language that is |
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especially suited for Web development and can be embedded into HTML. |
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|
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 dev-lang/php < 5.2.6-r6 >= 5.2.6-r6 |
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|
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Description |
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=========== |
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|
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Several vulnerabilitites were found in PHP: |
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|
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* PHP ships a vulnerable version of the PCRE library which allows for |
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the circumvention of security restrictions or even for remote code |
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execution in case of an application which accepts user-supplied |
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regular expressions (CVE-2008-0674). |
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|
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* Multiple crash issues in several PHP functions have been |
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discovered. |
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|
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* Ryan Permeh reported that the init_request_info() function in |
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sapi/cgi/cgi_main.c does not properly consider operator precedence |
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when calculating the length of PATH_TRANSLATED (CVE-2008-0599). |
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|
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* An off-by-one error in the metaphone() function may lead to memory |
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corruption. |
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|
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* Maksymilian Arciemowicz of SecurityReason Research reported an |
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integer overflow, which is triggerable using printf() and related |
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functions (CVE-2008-1384). |
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|
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* Andrei Nigmatulin reported a stack-based buffer overflow in the |
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FastCGI SAPI, which has unknown attack vectors (CVE-2008-2050). |
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|
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* Stefan Esser reported that PHP does not correctly handle multibyte |
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characters inside the escapeshellcmd() function, which is used to |
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sanitize user input before its usage in shell commands |
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(CVE-2008-2051). |
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|
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* Stefan Esser reported that a short-coming in PHP's algorithm of |
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seeding the random number generator might allow for predictible |
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random numbers (CVE-2008-2107, CVE-2008-2108). |
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|
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* The IMAP extension in PHP uses obsolete c-client API calls making |
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it vulnerable to buffer overflows as no bounds checking can be done |
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(CVE-2008-2829). |
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|
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* Tavis Ormandy reported a heap-based buffer overflow in |
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pcre_compile.c in the PCRE version shipped by PHP when processing |
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user-supplied regular expressions (CVE-2008-2371). |
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|
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* CzechSec reported that specially crafted font files can lead to an |
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overflow in the imageloadfont() function in ext/gd/gd.c, which is |
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part of the GD extension (CVE-2008-3658). |
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|
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* Maksymilian Arciemowicz of SecurityReason Research reported that a |
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design error in PHP's stream wrappers allows to circumvent safe_mode |
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checks in several filesystem-related PHP functions (CVE-2008-2665, |
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CVE-2008-2666). |
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|
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* Laurent Gaffie discovered a buffer overflow in the internal |
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memnstr() function, which is used by the PHP function explode() |
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(CVE-2008-3659). |
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|
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* An error in the FastCGI SAPI when processing a request with |
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multiple dots preceding the extension (CVE-2008-3660). |
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|
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Impact |
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====== |
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|
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These vulnerabilities might allow a remote attacker to execute |
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arbitrary code, to cause a Denial of Service, to circumvent security |
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restrictions, to disclose information, and to manipulate files. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All PHP users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=dev-lang/php-5.2.6-r6" |
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|
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References |
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========== |
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|
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[ 1 ] CVE-2008-0599 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0599 |
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[ 2 ] CVE-2008-0674 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0674 |
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[ 3 ] CVE-2008-1384 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1384 |
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[ 4 ] CVE-2008-2050 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2050 |
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[ 5 ] CVE-2008-2051 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2051 |
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[ 6 ] CVE-2008-2107 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2107 |
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[ 7 ] CVE-2008-2108 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2108 |
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[ 8 ] CVE-2008-2371 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2371 |
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[ 9 ] CVE-2008-2665 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2665 |
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[ 10 ] CVE-2008-2666 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2666 |
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[ 11 ] CVE-2008-2829 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-2829 |
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[ 12 ] CVE-2008-3658 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3658 |
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[ 13 ] CVE-2008-3659 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3659 |
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[ 14 ] CVE-2008-3660 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3660 |
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|
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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|
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http://security.gentoo.org/glsa/glsa-200811-05.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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|
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License |
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======= |
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Copyright 2008 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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|
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http://creativecommons.org/licenses/by-sa/2.5 |
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