The gdImageCropThreshold function in gd_crop.c in the GD Graphics Library (aka libgd) before 2.2.3, as used in PHP before 7.0.9, allows remote attackers to cause a denial of service (application crash) via an invalid color index.

redhat RHSA-2016:2750: RHSA-2016:2750: rh-php56 security, bug fix, and enhancement update (Moderate)

This update for php7 fixes the following security issues :

  - CVE-2016-6128: Invalid color index not properly handled     [bsc#987580]

  - CVE-2016-6161: global out of bounds read when encoding     gif from malformed input withgd2togif [bsc#988032]

  - CVE-2016-6292: NULL pointer dereference in     exif_process_user_comment [bsc#991422]

  - CVE-2016-6295: Use after free in SNMP with GC and     unserialize() [bsc#991424]

  - CVE-2016-6297: Stack-based buffer overflow vulnerability     in php_stream_zip_opener [bsc#991426]

  - CVE-2016-6291: Out-of-bounds access in     exif_process_IFD_in_MAKERNOTE [bsc#991427]

  - CVE-2016-6289: Integer overflow leads to buffer overflow     in virtual_file_ex [bsc#991428]

  - CVE-2016-6290: Use after free in unserialize() with     Unexpected Session Deserialization [bsc#991429]

  - CVE-2016-5399: Improper error handling in bzread()     [bsc#991430]

  - CVE-2016-6296: Heap buffer overflow vulnerability in     simplestring_addn in simplestring.c [bsc#991437]

  - CVE-2016-6207: Integer overflow error within
    _gdContributionsAlloc() [bsc#991434]

  - CVE-2016-4473: Invalid free() instead of efree() in     phar_extract_file()

  - CVE-2016-7124: Create an Unexpected Object and Don't     Invoke __wakeup() in Deserialization

  - CVE-2016-7125: PHP Session Data Injection Vulnerability

  - CVE-2016-7126: select_colors write out-of-bounds

  - CVE-2016-7127: imagegammacorrect allowed arbitrary write     access

  - CVE-2016-7128: Memory Leakage In     exif_process_IFD_in_TIFF

  - CVE-2016-7129: wddx_deserialize allowed illegal memory     access

  - CVE-2016-7131: wddx_deserialize null dereference with     invalid xml

  - CVE-2016-7132: wddx_deserialize null dereference in     php_wddx_pop_element

  - CVE-2016-7133: memory allocator fails to realloc small     block to large one

  - CVE-2016-7134: Heap overflow in the function curl_escape

  - CVE-2016-7130: wddx_deserialize null dereference

  - CVE-2016-7413: Use after free in wddx_deserialize

  - CVE-2016-7412: Heap overflow in mysqlnd when not     receiving UNSIGNED_FLAG in BIT field

  - CVE-2016-7417: Missing type check when unserializing     SplArray

  - CVE-2016-7416: Stack based buffer overflow in     msgfmt_format_message

  - CVE-2016-7418: NULL pointer dereference in     php_wddx_push_element

  - CVE-2016-7414: Out of bounds heap read when verifying     signature of zip phar in phar_parse_zipfile

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for php5 fixes the following security issues :

  - CVE-2016-6128: Invalid color index not properly handled     [bsc#987580]

  - CVE-2016-6161: global out of bounds read when encoding     gif from malformed input withgd2togif [bsc#988032]

  - CVE-2016-6292: NULL pointer dereference in     exif_process_user_comment [bsc#991422]

  - CVE-2016-6295: Use after free in SNMP with GC and     unserialize() [bsc#991424]

  - CVE-2016-6297: Stack-based buffer overflow vulnerability     in php_stream_zip_opener [bsc#991426]

  - CVE-2016-6291: Out-of-bounds access in     exif_process_IFD_in_MAKERNOTE [bsc#991427]

  - CVE-2016-6289: Integer overflow leads to buffer overflow     in virtual_file_ex [bsc#991428]

  - CVE-2016-6290: Use after free in unserialize() with     Unexpected Session Deserialization [bsc#991429]

  - CVE-2016-5399: Improper error handling in bzread()     [bsc#991430]

  - CVE-2016-6296: Heap buffer overflow vulnerability in     simplestring_addn in simplestring.c [bsc#991437]

  - CVE-2016-6207: Integer overflow error within
    _gdContributionsAlloc() [bsc#991434]

  - CVE-2014-3587: Integer overflow in the     cdf_read_property_info affecting SLES11 SP3 [bsc#987530]

  - CVE-2016-6288: Buffer over-read in php_url_parse_ex     [bsc#991433]

  - CVE-2016-7124: Create an Unexpected Object and Don't     Invoke __wakeup() in Deserialization

  - CVE-2016-7125: PHP Session Data Injection Vulnerability

  - CVE-2016-7126: select_colors write out-of-bounds

  - CVE-2016-7127: imagegammacorrect allowed arbitrary write     access

  - CVE-2016-7128: Memory Leakage In     exif_process_IFD_in_TIFF

  - CVE-2016-7129: wddx_deserialize allowed illegal memory     access

  - CVE-2016-7130: wddx_deserialize null dereference

  - CVE-2016-7131: wddx_deserialize null dereference with     invalid xml

  - CVE-2016-7132: wddx_deserialize null dereference in     php_wddx_pop_element

  - CVE-2016-7134: Heap overflow in the function curl_escape

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is affected by the vulnerability described in GLSA-201612-09 (GD: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in GD. Please review the       CVE identifiers referenced below for details.
  Impact :

    A remote attacker could possibly execute arbitrary code with the       privileges of the process, or cause a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

This update for php5 fixes the following security issues :

  - CVE-2016-6128: Invalid color index not properly handled     [bsc#987580]

  - CVE-2016-6161: global out of bounds read when encoding     gif from malformed input withgd2togif [bsc#988032]

  - CVE-2016-6292: NULL pointer dereference in     exif_process_user_comment [bsc#991422]

  - CVE-2016-6295: Use after free in SNMP with GC and     unserialize() [bsc#991424]

  - CVE-2016-6297: Stack-based buffer overflow vulnerability     in php_stream_zip_opener [bsc#991426]

  - CVE-2016-6291: Out-of-bounds access in     exif_process_IFD_in_MAKERNOTE [bsc#991427]

  - CVE-2016-6289: Integer overflow leads to buffer overflow     in virtual_file_ex [bsc#991428]

  - CVE-2016-6290: Use after free in unserialize() with     Unexpected Session Deserialization [bsc#991429]

  - CVE-2016-5399: Improper error handling in bzread()     [bsc#991430]

  - CVE-2016-6296: Heap buffer overflow vulnerability in     simplestring_addn in simplestring.c [bsc#991437]

  - CVE-2016-6207: Integer overflow error within
    _gdContributionsAlloc() [bsc#991434]

  - CVE-2014-3587: Integer overflow in the     cdf_read_property_info affecting SLES11 SP3 [bsc#987530]

  - CVE-2016-6288: Buffer over-read in php_url_parse_ex     [bsc#991433]

  - CVE-2016-7124: Create an Unexpected Object and Don't     Invoke __wakeup() in Deserialization

  - CVE-2016-7125: PHP Session Data Injection Vulnerability

  - CVE-2016-7126: select_colors write out-of-bounds

  - CVE-2016-7127: imagegammacorrect allowed arbitrary write     access

  - CVE-2016-7128: Memory Leakage In     exif_process_IFD_in_TIFF

  - CVE-2016-7129: wddx_deserialize allowed illegal memory     access

  - CVE-2016-7130: wddx_deserialize null dereference

  - CVE-2016-7131: wddx_deserialize null dereference with     invalid xml

  - CVE-2016-7132: wddx_deserialize null dereference in     php_wddx_pop_element

  - CVE-2016-7134: Heap overflow in the function curl_escape

This update was imported from the SUSE:SLE-12:Update update project.

This update for gd fixes the following issues :

  - CVE-2016-6214: Buffer over-read issue when parsing     crafted TGA file [bsc#991436]

  - CVE-2016-6132: read out-of-bands was found in the     parsing of TGA files using libgd [bsc#987577]

  - CVE-2016-6128: Invalid color index not properly handled     [bsc#991710]

  - CVE-2016-6207: Integer overflow error within
    _gdContributionsAlloc() [bsc#991622]

  - CVE-2016-6161: global out of bounds read when encoding     gif from malformed input withgd2togif [bsc#988032]

  - CVE-2016-5116: avoid stack overflow (read) with large     names [bsc#982176]

  - CVE-2016-6905: Out-of-bounds read in function     read_image_tga in gd_tga.c [bsc#995034]

This update was imported from the SUSE:SLE-12:Update update project.

This update for gd fixes the following issues :

  - CVE-2016-6214: Buffer over-read issue when parsing     crafted TGA file [bsc#991436]

  - CVE-2016-6132: read out-of-bands was found in the     parsing of TGA files using libgd [bsc#987577]

  - CVE-2016-6128: Invalid color index not properly handled     [bsc#991710]

  - CVE-2016-6207: Integer overflow error within
    _gdContributionsAlloc() [bsc#991622]

  - CVE-2016-6161: global out of bounds read when encoding     gif from malformed input withgd2togif [bsc#988032]

  - CVE-2016-5116: avoid stack overflow (read) with large     names [bsc#982176]

  - CVE-2016-6905: Out-of-bounds read in function     read_image_tga in gd_tga.c [bsc#995034]

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for gd fixes the following issues :

  - CVE-2016-6214: Buffer over-read issue when parsing     crafted TGA file [bsc#991436]

  - CVE-2016-6132: read out-of-bands was found in the     parsing of TGA files using libgd [bsc#987577]

  - CVE-2016-6128: Invalid color index not properly handled     [bsc#991710]

  - CVE-2016-6207: Integer overflow error within
    _gdContributionsAlloc() [bsc#991622]

  - CVE-2016-6161: global out of bounds read when encoding     gif from malformed input withgd2togif [bsc#988032]

This update for php5 fixes the following issues :

  - security update :

  - CVE-2016-6128: Invalid color index not properly handled     [bsc#987580]

  - CVE-2016-6161: global out of bounds read when encoding     gif from malformed input withgd2togif [bsc#988032]

  - CVE-2016-6292: NULL pointer dereference in     exif_process_user_comment [bsc#991422]

  - CVE-2016-6295: Use after free in SNMP with GC and     unserialize() [bsc#991424]

  - CVE-2016-6297: Stack-based buffer overflow vulnerability     in php_stream_zip_opener [bsc#991426]

  - CVE-2016-6291: Out-of-bounds access in     exif_process_IFD_in_MAKERNOTE [bsc#991427]

  - CVE-2016-6289: Integer overflow leads to buffer overflow     in virtual_file_ex [bsc#991428]

  - CVE-2016-6290: Use after free in unserialize() with     Unexpected Session Deserialization [bsc#991429]

  - CVE-2016-5399: Improper error handling in bzread()     [bsc#991430]

  - CVE-2016-6296: Heap buffer overflow vulnerability in     simplestring_addn in simplestring.c [bsc#991437]

  - CVE-2016-6207: Integer overflow error within
    _gdContributionsAlloc() [bsc#991434]

  - CVE-2016-6288: Buffer over-read in php_url_parse_ex     [bsc#991433]

Pierre Joye reports :

- fix php bug 72339, Integer Overflow in _gd2GetHeader (CVE-2016-5766)

- gd: Buffer over-read issue when parsing crafted TGA file (CVE-2016-6132)

- Integer overflow error within _gdContributionsAlloc() (CVE-2016-6207)

- fix php bug 72494, invalid color index not handled, can lead to crash ( CVE-2016-6128)

**LibGD 2.2.3 release**

Security related fixes: This flaw is caused by loading data from external sources (file, custom ctx, etc) and are hard to validate before calling libgd APIs :

  - fix php bug php#72339, Integer Overflow in _gd2GetHeader     (CVE-2016-5766)

  - bug #248, fix Out-Of-Bounds Read in read_image_tga

Using application provided parameters, in these cases invalid data causes the issues :

  - Integer overflow error within _gdContributionsAlloc()     (CVE-2016-6207)

  - fix php bug php#72494, invalid color index not handled,     can lead to crash

  - improve color check for CropThreshold

Important update :

  - gdImageCopyResampled has been improved. Better handling     of images with alpha channel, also brings libgd in sync     with php's bundled gd.

This is a recommended update.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several vulnerabilities were discovered in libgd2, a library for programmatic graphics creation and manipulation. A remote attacker can take advantage of these flaws to cause a denial-of-service against an application using the libgd2 library (application crash), or potentially to execute arbitrary code with the privileges of the user running the application.

Versions of PHP 5.5.x prior to 5.5.37, or 5.6.x prior to 5.6.23, or 7.0.x prior to 7.0.8 are vulnerable to the following issues :

 - PHP 'ext/mysqlnd/mysqlnd.c' contains a flaw that is due to the program failing to properly enforce the requirement of an SSL/TLS connection when the '--ssl client' option is used. This may allow a MitM (Man-in-the-Middle) attacker to downgrade the connection to plain HTTP when expected to be HTTPS. (CVE-2015-8838)
 - An integer overflow condition exists in the 'getFromIndex()'' and 'getFromName()' methods of 'ZipArchive'. The issue is triggered as user-supplied input is not properly validated when handling a specially crafted ZIP file. This may allow an attacker to cause a heap-based buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code. (CVE-2016-3078)
 - An XXE (Xml eXternal Entity) injection and expansion flaw affects the 'libxml_disable_entity_loader()' function in the source file 'ext/libxml/libxml.c' in PHP-FPM that is triggered during the parsing of XML data. The issue is due to an incorrectly configured XML parser accepting XML external entities from an untrusted source. By sending specially crafted XML data, a remote attacker can gain access to sensitive information or cause a denial of service. (CVE-2015-8866)
 - An integer overflow condition exists in the 'php_filter_encode_url()' function in 'ext/filter/sanitizing_filters.c'. The issue is triggered as user-supplied input is not properly validated. This may allow a remote attacker to cause a heap-based buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code. (CVE-2016-4345)
 - An integer overflow condition exists in 'ext/standard/string.c'. The issue is triggered as user-supplied input is not properly validated. This may allow a remote attacker to cause a heap-based buffer overflow, resulting in a denial of service or potentially allowing the execution of arbitrary code. (CVE-2016-4346)
 - The program contains an out-of-bounds read flaw in 'ext/intl/grapheme/grapheme_string.c' that is triggered when handling negative offsets in 'zif_grapheme_stripos'. This may allow a remote attacker to crash a process utilizing the language or potentially disclose memory contents. (CVE-2016-4540, CVE-2016-4541)
 - An out-of-bounds read flaw exists in the 'php_str2num()' function in 'ext/bcmath/bcmath.c' that is triggered when accepting negative scales. This may allow a remote attacker to crash a process utilizing the language or potentially disclose memory contents. (CVE-2016-4537, CVE-2016-4538)
 - An out-of-bounds read flaw exists in the 'exif_read_data()' function in 'ext/exif/exif.c' that is triggered when handling exif headers. This may allow a remote attacker to crash a process utilizing the language or potentially disclose memory contents. (CVE-2016-4542, CVE-2016-4543, CVE-2016-4544)
 - A flaw in the 'xml_parse_into_struct()' function in 'ext/xml/xml.c' is triggered during the handling of a specially crafted XML content. This may allow a remote attacker to cause a denial of service. (CVE-2016-4539)
 - A double-free flaw exists in the 'php_formatted_print()' function in 'ext/standard/formatted_print.c'. This may allow an attacker to have an unspecified impact. (CVE-2015-8880)
 - A flaw exists in 'main/php_open_temporary_file.c' that is triggered as thread safety is not ensured during the handling of temporary directories. This may allow a remote attacker to cause a denial of service. (CVE-2015-8878)
 - An integer overflow flaw exists in the 'php_html_entities()' and 'php_filter_full_special_chars()' functions in 'ext/standard/html.c' that is triggered as input is not properly validated. This may allow a remote attacker to have an unspecified impact. No further details have been provided. (CVE-2016-5094, CVE-2016-5095)
 - An integer underflow issue exists in 'ext/standard/file.c' that is triggered as input is not properly validated. This may allow a remote attacker to cause a NULL write and cause a process linked against PHP to crash. (CVE-2016-5096)
 - An out-of-bounds read flaw exists in the '_gdContributionsCalc()' function in 'ext/gd/libgd/gd_interpolation.c'. This may allow a context-dependent attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2013-7456)
 - An out-of-bounds read flaw exists in the 'get_icu_value_internal()' function within 'ext/intl/locale/locale_methods.c' that is triggered when handling user-supplied input. This may allow a remote attacker to crash a process linked against the library or potentially disclose memory contents. (CVE-2016-5093)
 - A flaw exists that allows a cross-site scripting (XSS) attack. This flaw exists because the 'header()' function does not filter input passed via HTTP headers before returning it to users. This may allow a remote attacker to create a specially crafted request that would execute arbitrary script code in a user's browser session within the trust relationship between their browser and the server. (CVE-2015-8935)
 - A use-after-free error exists in the garbage collection algorithm in 'ext/zip/php_zip.c'. This may allow a remote attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-5773)
 - An integer overflow condition exists in the 'json_decode()' and 'json_utf8_to_utf16()' functions in 'ext/standard/php_smart_str.h'. The issue is triggered as user-supplied input is not properly validated. This may allow a remote attacker to cause a heap-based buffer overflow, causing a denial of service in a process linked against PHP or potentially allowing the execution of arbitrary code.
 - An out-of-bounds read flaw exists within the 'pass2_no_dither()' function inside 'ext/gd/libgd/gd_topal.c' that may allow a remote attacker to crash a process utilizing PHP or potentially disclose memory contents.
 - An integer overflow condition exists in 'ext/standard/string.c'. The issue is triggered as user-supplied input is not properly validated when handling string lengths. This may allow a remote attacker to have an unspecified impact.
 - A double-free flaw exists within the '_php_mb_regex_ereg_replace_exec()' function inside 'ext/mbstring/php_mbregex.c' that is triggered when handling a failed callback execution. This may allow a remote attacker to potentially execute arbitrary code. (CVE-2016-5768)
 - An integer overflow condition exists in 'ext/spl/spl_directory.c'. The issue is triggered by an 'int/size_t' confusion issue. This may allow a remote attacker to have an unspecified impact. (CVE-2016-5770)
 - An integer overflow condition exists in 'ext/mcrypt/mcrypt.c'. The issue is triggered as user-supplied input is not properly validated when handling data values. This may allow a remote attacker to cause a heap-based buffer overflow, resulting in a denial of service in a process linked against PHP or potentially allowing the execution of arbitrary code. (CVE-2016-5769)
 - An integer overflow condition exists within the 'nl2br()' function inside 'ext/standard/string.c'. The issue is triggered as user-supplied input is not properly validated when handling new_length values. This may allow a remote attacker to have an unspecified impact.
 - An integer overflow condition exists within multiple functions in 'ext/standard/string.c'. The issue is triggered as user-supplied input is not properly validated when handling string values. This may allow a remote attacker to have an unspecified impact.
 - A double-free flaw within the 'php_wddx_process_data()' function inside 'ext/wddx/wddx.c' that is triggered during the handling of specially crafted XML content. This may allow a remote attacker to potentially execute arbitrary code. (CVE-2016-5772)
 - An integer overflow condition exists witin the 'gdImagePaletteToTrueColor()' function inside 'ext/gd/libgd/gd.c'. The issue is triggered as user-supplied input is not properly validated. This may allow a remote attacker to cause a heap-based buffer overflow, resulting in a denial of service in a process linked against PHP or potentially allowing the execution of arbitrary code. (CVE-2016-5767)
 - An invalid free flaw exists within the 'phar_extract_file()' function inside 'ext/phar/phar_object.c'. This may allow a remote attacker to have an unspecified impact. (CVE-2016-4473)
 - An integer overflow condition exists within the '_gd2GetHeader()' function inside 'ext/gd/libgd/gd_gd2.c'. The issue is triggered as user-supplied input is not properly validated. This may allow a remote attacker to cause a heap-based buffer overflow, resulting in a denial of service in a process linked against PHP or potentially allowing the execution of arbitrary code. (CVE-2016-5766)
 - A use-after-free error exists within the garbage collection algorithm inside 'ext/spl/spl_array.c'. This may allow a remote attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-5771)

It was discovered that the GD library incorrectly handled memory when using gdImageScaleTwoPass(). A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS. (CVE-2013-7456)

It was discovered that the GD library incorrectly handled certain malformed XBM images. If a user or automated system were tricked into processing a specially crafted XBM image, an attacker could cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2016-5116)

It was discovered that the GD library incorrectly handled memory when using _gd2GetHeader(). A remote attacker could possibly use this issue to cause a denial of service or possibly execute arbitrary code.
(CVE-2016-5766)

It was discovered that the GD library incorrectly handled certain color indexes. A remote attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 14.04 LTS, Ubuntu 15.10 and Ubuntu 16.04 LTS. (CVE-2016-6128)

It was discovered that the GD library incorrectly handled memory when encoding a GIF image. A remote attacker could possibly use this issue to cause a denial of service. (CVE-2016-6161).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
119981	SUSE SLES12 Security Update : php7 (SUSE-SU-2016:2460-1)	Nessus	SuSE Local Security Checks	critical
119979	SUSE SLES12 Security Update : php5 (SUSE-SU-2016:2408-1)	Nessus	SuSE Local Security Checks	critical
95524	GLSA-201612-09 : GD: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
93856	openSUSE Security Update : php5 (openSUSE-2016-1156)	Nessus	SuSE Local Security Checks	critical
93701	openSUSE Security Update : gd (openSUSE-2016-1108)	Nessus	SuSE Local Security Checks	critical
93506	SUSE SLED12 / SLES12 Security Update : gd (SUSE-SU-2016:2303-1)	Nessus	SuSE Local Security Checks	critical
93063	openSUSE Security Update : gd (openSUSE-2016-1003)	Nessus	SuSE Local Security Checks	high
92982	openSUSE Security Update : php5 (openSUSE-2016-985)	Nessus	SuSE Local Security Checks	critical
92740	FreeBSD : gd -- multiple vulnerabilities (556d2286-5a51-11e6-a6c3-14dae9d210b8)	Nessus	FreeBSD Local Security Checks	high
92532	Fedora 24 : gd (2016-615f3bf06e)	Nessus	Fedora Local Security Checks	high
92327	Debian DSA-3619-1 : libgd2 - security update	Nessus	Debian Local Security Checks	critical
9393	PHP 5.5.x < 5.5.37 / 5.6.x < 5.6.23 / 7.0.x < 7.0.8 Multiple Vulnerabilities	Nessus Network Monitor	Web Servers	high
92011	Ubuntu 14.04 LTS / 16.04 LTS : GD library vulnerabilities (USN-3030-1)	Nessus	Ubuntu Local Security Checks	critical

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