CVE-2016-8670

Integer signedness error in the dynamicGetbuf function in gd_io_dp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP before 5.6.28 and 7.x before 7.0.13, allows remote attackers to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a crafted imagecreatefromstring call.

Integer signedness error in the dynamicGetbuf function in gd_io_dp.c in the GD Graphics Library (aka libgd) through 2.2.3, as used in PHP before 5.6.28 and 7.x before 7.0.13, allows remote attackers to cause a denial of service (stack-based buffer overflow) or possibly have unspecified other impact via a crafted imagecreatefromstring call.

• Fix bug #69720: Null pointer dereference in phar_get_fp_offset()
• Fix bug #70728: Type Confusion Vulnerability in PHP_to_XMLRPC_worker()
• Fix bug #70661: Use After Free Vulnerability in WDDX Packet Deserialization
• Fix bug #70741: Session WDDX Packet Deserialization Type Confusion Vulnerability
• Fix bug #71459: Integer overflow in iptcembed()
• Fix bug #71039: exec functions ignore length but look for NULL termination
• Fix bug #71354: Heap corruption in tar/zip/phar parser.
• Fix bug #71391: NULL Pointer Dereference in phar_tar_setupmetadata()
• Fix bug #71323: Output of stream_get_meta_data can be falsified by its input
• Fix bug #71498: Out-of-Bound Read in phar_parse_zipfile()
• Fix bug #71587: Use-After-Free / Double-Free in WDDX Deserialize
• Fix bug #71860: Invalid memory write in phar on filename with \0 in name
• Fix bug #71798: Integer Overflow in php_raw_url_encode
• Fix bug #72837: integer overflow in bzdecompress caused heap corruption
• Fix bug #72681: PHP Session Data Injection Vulnerability
• Fix bug #72807: integer overflow in curl_escape caused heap corruption
• Fix bug #72838: Integer overflow lead to heap corruption in sql_regcase
• Fix bug #72697: select_colors write out-of-bounds
• Fix bug #72730: imagegammacorrect allows arbitrary write access
• Fix bug #72836: integer overflow in base64_decode caused heap corruption
• Fix bug #72848: integer overflow in quoted_printable_encode caused heap corruption
• Fix bug #72849: integer overflow in urlencode caused heap corruption
• Fix bug #72850: integer overflow in php_uuencode caused heap corruption
• Fix bug #72771: ftps:// wrapper is vulnerable to protocol downgrade attack
• Fix bug #72749: wddx_deserialize allows illegal memory access
• Fix bug #72750: wddx_deserialize null dereference
• Fix bug #72790: wddx_deserialize null dereference with invalid xml
• Fix bug #72799: wddx_deserialize null dereference in php_wddx_pop_element
• Fix bug #73189: Memcpy negative size parameter php_resolve_path
• Fix bug #73150: missing NULL check in dom_document_save_html
• Fix bug #73284: heap overflow in php_ereg_replace function
• Fix bug #73218: stack-buffer-overflow through "ResourceBundle" methods
• Fix bug #73208: integer overflow in imap_8bit caused heap corruption
• Fix bug #73082: string length overflow in mb_encode_* function
• Fix bug #73174: heap overflow in php_pcre_replace_impl
• Fix bug #73276: crash in openssl_random_pseudo_bytes function
• Fix bug #73275: crash in openssl_encrypt function
• Fix bug #73017: memory corruption in wordwrap function
• Fix bug #73240: Write out of bounds at number_format
• Fix bug #73073: CachingIterator null dereference when convert to string
• Fix bug #73293: NULL pointer dereference in SimpleXMLElement::asXML()
• Fix bug #73356: crash in bzcompress function
• Fix bug #72696: imagefilltoborder stackoverflow on truecolor images
• Fix bug #73418: Integer Overflow in "_php_imap_mail" leads Heap Overflow
• Fix bug #73144: Use-after-free in ArrayObject Deserialization
• Fix bug #73192: parse_url return wrong hostname
• Fix bug #73331: NULL Pointer Dereference in WDDX Packet Deserialization with PDORow
• Fix bug #73452: Segfault (Regression for #69152)
• Fix bug #73631: Invalid read when wddx decodes empty boolean element
• Fix bug #67587: Redirection loop on nginx with FPM
• Fix bug #71465: PHAR doesn't know about litespeed
• Fix bug #73737: FPE when parsing a tag format
• Fix bug #73868: Fix DOS vulnerability in gdImageCreateFromGd2Ctx()
• Fix bug #73869: Signed Integer Overflow gd_io.c
• Fix bug #73773: Seg fault when loading hostile phar
• Fix bug #70436: Use After Free Vulnerability in unserialize()
• Fix bug #74603: PHP INI Parsing Stack Buffer Overflow Vulnerability
• Fix bug #72535: arcfour encryption stream filter crashes php
• Fix bug #72434: ZipArchive class Use After Free Vulnerability in PHP's GC algorithm and unseria
• Fix bug #72455: Heap Overflow due to integer overflows
• Fix bug #74782:…

Ibrahim El-Sayed discovered that the GD library incorrectly handled certain malformed Tiff images. If a user or automated system were tricked into processing a specially crafted Tiff image, an attacker could cause a denial of service (CVE-2016-6911).

Emmanuel Law discovered that the GD library incorrectly handled certain strings when creating images. If a user or automated system were tricked into processing a specially crafted image, an attacker could cause a denial of service, or possibly execute arbitrary code (CVE-2016-8670).

This update for gd fixes the following security issues:

• CVE-2016-7568: A specially crafted image file could cause an application crash or potentially execute arbitrary code when the image is converted to webp (bsc#1001900)
• CVE-2016-8670: Stack Buffer Overflow in GD dynamicGetbuf (bsc#1004924)
• CVE-2016-6911: Check for out-of-bound read in dynamicGetbuf() (bsc#1005274)

This update for gd fixes the following issues:

• CVE-2016-8670: Stack Buffer Overflow in GD dynamicGetbuf (bsc#1004924)
• CVE-2016-6911: Check for out-of-bound read in dynamicGetbuf() (bsc#1005274)

This update for php53 fixes the following issues:

• CVE-2016-8670: Stack Buffer Overflow in GD dynamicGetbuf (bsc#1004924)
• CVE-2016-6911: Check for out-of-bound read in dynamicGetbuf() (bsc#1005274)

This update for php7 fixes the following security issue:

• CVE-2016-7568: A specially crafted image file could cause an application crash or potentially execute arbitrary code when the image is converted to webp (bsc#1001900)
• CVE-2016-8670: Stack Buffer Overflow in GD dynamicGetbuf (bsc#1004924)
• CVE-2016-6911: Check for out-of-bound read in dynamicGetbuf() (bsc#1005274)

This update for php7 fixes the following security issue:

• CVE-2016-7568: A specially crafted image file could cause an application crash or potentially execute arbitrary code when the image is converted to webp (bsc#1001900)
• CVE-2016-8670: Stack Buffer Overflow in GD dynamicGetbuf (bsc#1004924)
• CVE-2016-6911: Check for out-of-bound read in dynamicGetbuf() (bsc#1005274)

This update for php5 fixes the following security issues:

• CVE-2016-7568: A specially crafted image file could cause an application crash or potentially execute arbitrary code when the image is converted to webp (bsc#1001900)
• CVE-2016-8670: Stack Buffer Overflow in GD dynamicGetbuf (bsc#1004924)
• CVE-2016-6911: Check for out-of-bound read in dynamicGetbuf() (bsc#1005274)

Ibrahim El-Sayed discovered that the GD library incorrectly handled certain malformed Tiff images. If a user or automated system were tricked into processing a specially crafted Tiff image, an attacker could cause a denial of service. (CVE-2016-6911)

Ke Liu discovered that the GD library incorrectly handled certain integers when processing WebP images. If a user or automated system were tricked into processing a specially crafted WebP image, an attacker could cause a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-7568)

Emmanuel Law discovered that the GD library incorrectly handled certain strings when creating images. If a user or automated system were tricked into processing a specially crafted image, an attacker could cause a denial of service, or possibly execute arbitrary code. (CVE-2016-8670)