CVE-2015-8935

The sapi_header_op function in main/SAPI.c in PHP before 5.4.38, 5.5.x before 5.5.22, and 5.6.x before 5.6.6 supports deprecated line folding without considering browser compatibility, which allows remote attackers to conduct cross-site scripting (XSS) attacks against Internet Explorer by leveraging (1) %0A%20 or (2) %0D%0A%20 mishandling in the header function.

This update for php5 fixes the following issues:

• It is possible to launch a web server with 'php -S localhost:8080' It used to be possible to set an arbitrary $HTTP_PROXY environment variable for request handlers -- like CGI scripts -- by including a specially crafted HTTP header in the request (CVE-2016-5385). As a result, these server components would potentially direct all their outgoing HTTP traffic through a malicious proxy server. This patch fixes the issue: the updated php server ignores such HTTP headers and never sets $HTTP_PROXY for sub-processes. (bnc#988486)
• There was multiple cases where a remote attacker could trigger a double free and, given specific PHP code using callbacks, trigger code execution vectors. (bnc#986246,bnc#986244,CVE-2016-5768,CVE-2016-5772)
• It was possible to inject header or content information (XSS) when a user was using internet explorer as the browser. (bnc#986004, CVE-2015-8935)
• In several cases it was possible for a integer overflow to trigger an excessive memory allocation (bnc#986392, bnc#986388, bnc#986386, bnc#986393, CVE-2016-5770, CVE-2016-5769, CVE-2016-5766, CVE-2016-5767)
• It was possible for an attacker to abuse the garbage collector to free a target array. At this point an attacker could craft a fake zval object and exploit the PHP process by taking over the EIP/RIP. (bnc#986391, CVE-2016-5771)

php53 was updated to fix five security issues.

These security issues were fixed:

• CVE-2016-5769: mcrypt: Heap Overflow due to integer overflows (bsc#986388).
• CVE-2015-8935: XSS in header() with Internet Explorer (bsc#986004).
• CVE-2016-5772: Double Free Courruption in wddx_deserialize (bsc#986244).
• CVE-2016-5766: Integer Overflow in _gd2GetHeader() resulting in heap overflow (bsc#986386).
• CVE-2016-5767: Integer Overflow in gdImagePaletteToTrueColor() resulting in heap overflow (bsc#986393).

php5 was updated to fix the following security issues:

• 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-2016-6288: Buffer over-read in php_url_parse_ex (bsc#991433).
• CVE-2016-6296: Heap buffer overflow vulnerability in simplestring_addn in simplestring.c (bsc#991437).
• CVE-2016-5769: Mcrypt: Heap Overflow due to integer overflows (bsc#986388).
• CVE-2015-8935: XSS in header() with Internet Explorer (bsc#986004).
• CVE-2016-5772: Double free corruption in wddx_deserialize (bsc#986244).
• CVE-2016-5766: Integer Overflow in _gd2GetHeader() resulting in heap overflow (bsc#986386).
• CVE-2016-5767: Integer Overflow in gdImagePaletteToTrueColor() resulting in heap overflow (bsc#986393).

It was discovered that PHP incorrectly handled certain SplMinHeap::compare operations. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-4116)

It was discovered that PHP incorrectly handled recursive method calls. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-8873)

It was discovered that PHP incorrectly validated certain Exception objects when unserializing data. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-8876)

It was discovered that PHP header() function performed insufficient filtering for Internet Explorer. A remote attacker could possibly use this issue to perform a XSS attack. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-8935)

It was discovered that PHP incorrectly handled certain locale operations. An attacker could use this issue to cause PHP to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-5093)

It was discovered that the PHP php_html_entities() function incorrectly handled certain string lengths. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-5094, CVE-2016-5095)

It was discovered that the PHP fread() function incorrectly handled certain lengths. An attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-5096)

It was discovered that the PHP FastCGI Process Manager (FPM) SAPI incorrectly handled memory in the access logging feature. An attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly expose sensitive information. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-5114)

It was discovered that PHP would not protect applications from contents of the HTTP_PROXY environment variable when based on the contents of the Proxy header from HTTP requests. A remote attacker could possibly use this issue in combination with scripts that honour the HTTP_PROXY variable to redirect outgoing HTTP requests. (CVE-2016-5385)

Hans Jerry Illikainen discovered that the PHP bzread() function incorrectly performed error handling. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-5399)

It was discovered that certain PHP multibyte string functions incorrectly handled memory. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2016-5768)

It was discovered that the PHP Mcrypt extension incorrectly handled memory. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-5769)

It was discovered that the PHP garbage collector incorrectly handled certain objects when unserializing malicious data. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue was only addressed in Ubuntu Ubuntu 14.04 LTS. (CVE-2016-5771, CVE-2016-5773)

It was discovered that PHP incorrectly handled memory when unserializing malicious xml data. A remote attacker could use this issue to cause PHP to crash, resulting in a…