CVE-2017-12933

The finish_nested_data function in ext/standard/var_unserializer.re in PHP before 5.6.31, 7.0.x before 7.0.21, and 7.1.x before 7.1.7 is prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue can have an unspecified impact on the integrity of PHP.

This update for php7 fixes several issues.

These security issues were fixed:

• CVE-2017-12932: Prevent heap use after free while unserializing untrusted data, related to improper use of the hash API for key deletion in a situation with an invalid array size. Exploitation of this issue could have had an unspecified impact on the integrity of PHP (bsc#1054432).
• CVE-2017-12934: Prevent heap use after free while unserializing untrusted data, related to the zval_get_type function in Zend/zend_types.h. Exploitation of this issue could have had an unspecified impact on the integrity of PHP (bsc#1054408).
• CVE-2017-12933: The finish_nested_data function in ext/standard/var_unserializer.re was prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue could have had an unspecified impact on the integrity of PHP (bsc#1054430)

These non-security issues were fixed:

• bsc#1057104: php7-devel now requires php7-pear
• bsc#1057845: Fixed namespace encapsulation of imported classes/functions/constants

This update for php5 fixes on issues.

This security issue was fixed:

• CVE-2017-12933: The finish_nested_data function in ext/standard/var_unserializer.re was prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue could have had an unspecified impact on the integrity of PHP (bsc#1054430)

This update for php53 fixes the several issues.

These security issues were fixed:

• CVE-2017-12933: The finish_nested_data function in ext/standard/var_unserializer.re was prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue could have had an unspecified impact on the integrity of PHP (bsc#1054430).
• CVE-2017-11628: Stack-based buffer overflow in the zend_ini_do_op() function in Zend/zend_ini_parser.c could have caused a denial of service or potentially allowed executing code (bsc#1050726).
• CVE-2017-7890: The GIF decoding function gdImageCreateFromGifCtx in the GD Graphics Library did not zero colorMap arrays use. A specially crafted GIF image could use the uninitialized tables to read ~700 bytes from the top of the stack, potentially disclosing sensitive information (bsc#1050241).
• CVE-2016-5766: Integer overflow in the _gd2GetHeader in the GD Graphics Library (aka libgd) allowed remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via crafted chunk dimensions in an image (bsc#986386).
• CVE-2017-11145: An error in the date extension's timelib_meridian parsing code could have been used by attackers able to supply date strings to leak information from the interpreter, related to ext/date/lib/parse_date.c out-of-bounds reads affecting the php_parse_date function (bsc#1048112).
• CVE-2017-11146: Lack of bounds checks in timelib_meridian parse code could have lead to information leak [bsc#1048111]
• CVE-2016-10397: Incorrect handling of various URI components in the URL parser could have been used by attackers to bypass hostname-specific URL checks (bsc#1047454).
• CVE-2017-11147: The PHAR archive handler could have been used by attackers supplying malicious archive files to crash the PHP interpreter or potentially disclose information due to a buffer over-read in the phar_parse_pharfile function (bsc#1048094).
• CVE-2017-11144: The openssl extension PEM sealing code did not check the return value of the OpenSSL sealing function, which could have lead to a crash of the PHP interpreter (bsc#1048096).

It was discovered that PHP incorrectly handled the PHAR 404 error page. A remote attacker could possibly use this issue to conduct cross-site scripting (XSS) attacks. (CVE-2018-5712)

It was discovered that PHP incorrectly handled memory when unserializing certain data. A remote attacker could use this issue to cause PHP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-12933)

It was discovered that PHP incorrectly handled 'front of' and 'back of' date directives. A remote attacker could possibly use this issue to obtain sensitive information. (CVE-2017-16642)

USN-3566-1 fixed several vulnerabilities in PHP. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

It was discovered that PHP incorrectly handled certain files. An attacker could possibly use this issue to access sensitive information. (CVE-2018-20783)

It was discovered that PHP incorrectly handled certain files. An attacker could possibly use this issue to access sensitive information or possibly cause a crash, resulting in a denial of service. (CVE-2019-11036)

Original advisory details:

It was discovered that PHP incorrectly handled memory when unserializing certain 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 ESM. (CVE-2017-12933)

It was discovered that PHP incorrectly handled locale length. A remote attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service. This issue only affected Ubuntu 12.04 ESM. (CVE-2017-11362)

It was discovered that PHP incorrectly handled certain stream metadata. A remote attacker could possibly use this issue to set arbitrary metadata. This issue only affected Ubuntu 12.04 ESM. (CVE-2016-10712)