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Gentoo Linux Security Advisory GLSA 200710-02 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: PHP: Multiple vulnerabilities |
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Date: October 07, 2007 |
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Bugs: #179158, #180556, #191034 |
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ID: 200710-02 |
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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 < 5.2.4_p20070914-r2 >= 5.2.4_p20070914-r2 |
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|
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Description |
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=========== |
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|
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Several vulnerabilities were found in PHP. Mattias Bengtsson and Philip |
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Olausson reported integer overflows in the gdImageCreate() and |
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gdImageCreateTrueColor() functions of the GD library which can cause |
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heap-based buffer overflows (CVE-2007-3996). Gerhard Wagner discovered |
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an integer overflow in the chunk_split() function that can lead to a |
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heap-based buffer overflow (CVE-2007-2872). Its incomplete fix caused |
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incorrect buffer size calculation due to precision loss, also resulting |
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in a possible heap-based buffer overflow (CVE-2007-4661 and |
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CVE-2007-4660). A buffer overflow in the sqlite_decode_binary() of the |
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SQLite extension found by Stefan Esser that was addressed in PHP 5.2.1 |
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was not fixed correctly (CVE-2007-1887). |
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|
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Stefan Esser discovered an error in the zend_alter_ini_entry() function |
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handling a memory_limit violation (CVE-2007-4659). Stefan Esser also |
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discovered a flaw when handling interruptions with userspace error |
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handlers that can be exploited to read arbitrary heap memory |
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(CVE-2007-1883). Disclosure of sensitive memory can also be triggered |
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due to insufficient boundary checks in the strspn() and strcspn() |
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functions, an issue discovered by Mattias Bengtsson and Philip Olausson |
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(CVE-2007-4657) |
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|
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Stefan Esser reported incorrect validation in the FILTER_VALIDATE_EMAIL |
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filter of the Filter extension allowing arbitrary email header |
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injection (CVE-2007-1900). NOTE: This CVE was referenced, but not fixed |
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in GLSA 200705-19. |
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|
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Stanislav Malyshev found an error with unknown impact in the |
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money_format() function when processing "%i" and "%n" tokens |
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(CVE-2007-4658). zatanzlatan reported a buffer overflow in the |
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php_openssl_make_REQ() function with unknown impact when providing a |
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manipulated SSL configuration file (CVE-2007-4662). Possible memory |
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corruption when trying to read EXIF data in exif_read_data() and |
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exif_thumbnail() occurred with unknown impact. |
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|
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Several vulnerabilities that allow bypassing of open_basedir and other |
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restrictions were reported, including the glob() function |
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(CVE-2007-4663), the session_save_path(), ini_set(), and error_log() |
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functions which can allow local command execution (CVE-2007-3378), |
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involving the readfile() function (CVE-2007-3007), via the Session |
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extension (CVE-2007-4652), via the MySQL extension (CVE-2007-3997) and |
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in the dl() function which allows loading extensions outside of the |
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specified directory (CVE-2007-4825). |
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|
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Multiple Denial of Service vulnerabilities were discovered, including a |
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long "library" parameter in the dl() function (CVE-2007-4887), in |
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several iconv and xmlrpc functions (CVE-2007-4840 and CVE-2007-4783), |
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in the setlocale() function (CVE-2007-4784), in the glob() and |
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fnmatch() function (CVE-2007-4782 and CVE-2007-3806), a floating point |
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exception in the wordwrap() function (CVE-2007-3998), a stack |
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exhaustion via deeply nested arrays (CVE-2007-4670), an infinite loop |
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caused by a specially crafted PNG image in the png_read_info() function |
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of libpng (CVE-2007-2756) and several issues related to array |
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conversion. |
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|
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Impact |
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====== |
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|
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Remote attackers might be able to exploit these issues in PHP |
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applications making use of the affected functions, potentially |
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resulting in the execution of arbitrary code, Denial of Service, |
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execution of scripted contents in the context of the affected site, |
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security bypass or information leak. |
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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-5.2.4_p20070914-r2" |
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|
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References |
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========== |
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[ 1 ] CVE-2007-1883 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1883 |
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[ 2 ] CVE-2007-1887 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1887 |
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[ 3 ] CVE-2007-1900 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1900 |
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[ 4 ] CVE-2007-2756 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2756 |
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[ 5 ] CVE-2007-2872 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2872 |
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[ 6 ] CVE-2007-3007 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3007 |
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[ 7 ] CVE-2007-3378 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3378 |
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[ 8 ] CVE-2007-3806 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3806 |
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[ 9 ] CVE-2007-3996 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3996 |
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[ 10 ] CVE-2007-3997 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3997 |
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[ 11 ] CVE-2007-3998 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3998 |
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[ 12 ] CVE-2007-4652 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4652 |
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[ 13 ] CVE-2007-4657 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4657 |
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[ 14 ] CVE-2007-4658 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4658 |
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[ 15 ] CVE-2007-4659 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4659 |
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[ 16 ] CVE-2007-4660 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4660 |
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[ 17 ] CVE-2007-4661 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4661 |
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[ 18 ] CVE-2007-4662 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4662 |
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[ 19 ] CVE-2007-4663 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4663 |
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[ 20 ] CVE-2007-4670 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4670 |
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[ 21 ] CVE-2007-4727 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4727 |
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[ 22 ] CVE-2007-4782 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4782 |
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[ 23 ] CVE-2007-4783 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4783 |
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[ 24 ] CVE-2007-4784 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4784 |
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[ 25 ] CVE-2007-4825 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4825 |
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[ 26 ] CVE-2007-4840 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4840 |
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[ 27 ] CVE-2007-4887 |
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http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-4887 |
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[ 28 ] GLSA 200705-19 |
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http://www.gentoo.org/security/en/glsa/glsa-200705-19.xml |
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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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http://security.gentoo.org/glsa/glsa-200710-02.xml |
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Concerns? |
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========= |
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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 2007 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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|
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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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