CVE-2017-8923

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server.

The following packages have been upgraded to a later upstream version: php (7.4.33).

Security Fix(es):

• XKCP: buffer overflow in the SHA-3 reference implementation (CVE-2022-37454)

• php: standard insecure cookie could be treated as a '__Host-' or '__Secure-' cookie by PHP applications (CVE-2022-31629)

• php: OOB read due to insufficient input validation in imageloadfont() (CVE-2022-31630)

• php: PDO::quote() may return unquoted string due to an integer overflow (CVE-2022-31631)

• php: phar: infinite loop when decompressing quine gzip file (CVE-2022-31628)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.8 Release Notes linked from the References section.

The zend_string_extend function in Zend/zend_string.h in PHP through 7.1.5 does not prevent changes to string objects that result in a negative length, which allows remote attackers to cause a denial of service (application crash) or possibly have unspecified other impact by leveraging a script's use of .= with a long string.

• SECURITY UPDATE: Denial of service
  • debian/patches/CVE-2015-9253-pre1.patch: include .inc files used in fpm tests in sapi/fpm/tests/ alogin with other .phpt test scripts.
  • debian/patches/CVE-2015-9253-pre2.patch: close the listening socket on sapi/fpm/fpm/fpm_signals.c and added tests in sapi/fpm/tests/bug77934-reload-process-control.phpt.
  • debian/patches/CVE-2015-9253.patch: directly listen on socket, instead of dumping it to STDIN in sapi/fpm/fpm/fpm_children.c, sapi/fpm/fpm_stdio.c, and added tests in sapi/fpm/tests/bug73342-nonblocking-stdio.phpt.
  • CVE-2015-9253
• SECURITY UPDATE: Integer overflow
  • debian/patches/CVE-2017-8923-pre.patch: added ZSTR_MAX_LEN macro in Zend/zend_string.h and make use of it in Zend/zend_operators.c instead of using SIZE_MAX.
  • debian/patches/CVE-2017-8923.patch: added a length check before calling zend_string_realloc method in Zend/zend_vm_def.h and Zend/zend_vm_execute.h.
  • CVE-2017-8923
• SECURITY UPDATE: Integer overflow
  • debian/patches/CVE-2017-9118.patch: added ZSTR_MAX_OVERHEAD macro in Zend/zend_string.h that has the the maximal overhead of a zend_string and uses it in ext/pcre/php_pcre.c to assign a zend_string length value.
  • CVE-2017-9118
• SECURITY UPDATE: Use after free
  • debian/patches/CVE-2017-9119.patch: changed the decrement of refcount to be made once the string allocation has succeeded in Zend/zend_string.h.
  • CVE-2017-9119
• SECURITY UPDATE: Integer overflow
  • debian/patches/CVE-2017-9120.patch: changed the string allocation from zend_string_alloc to zend_string_safe_alloc in ext/mysqli/mysqli_api.c.
  • CVE-2017-9120
• SECURITY UDPATE: Improper handling of special characters
  • debian/patches/CVE-2021-21707.patch: added a string validation to check for improper characters in ext/dom/domimplementation.c and in ext/libxml/libxml.c and added tests in ext/simplexml/tests/bug79971_1.phpt and ext/dom/tests/bug79971_2.phpt.
  • CVE-2021-21707

• CVE-2017-8923: fix integer overflow in string concatenation
• Fix heap buffer overflow via str_repeat

• CVE-2017-8923: fix integer overflow in string concatenation
• Fix heap buffer overflow via str_repeat

• CVE-2017-8923: fix integer overflow when concatenating strings

This update for php7 fixes the following issues:

• CVE-2017-8923: Fixed denial of service (application crash) when using .= with a long string (zend_string_extend func in Zend/zend_string.h) (bsc#1038980).

This update for php74 fixes the following issues:

• CVE-2017-8923: Fixed denial of service (application crash) when using .= with a long string (zend_string_extend func in Zend/zend_string.h) (bsc#1038980).

This update for php72 fixes the following issues:

• CVE-2015-9253: Fixed endless loop when the master process restarts a child process using program execution functions (bsc#1081790).
• CVE-2017-8923: Fixed denial of service (application crash) when using .= with a long string (zend_string_extend func in Zend/zend_string.h) (bsc#1038980).
• CVE-2021-21707: Fixed special character handling that broke path in xml parsing (bsc#1193041).

This update for php7 fixes the following issues:

• CVE-2021-21703: Fixed local privilege escalation via PHP-FPM (bsc#1192050).
• CVE-2021-21707: Fixed special character breaks path in xml parsing (bsc#1193041).
• CVE-2017-8923: Fixed denial of service (application crash) when using .= with a long string (zend_string_extend func in Zend/zend_string.h) (bsc#1038980).
• CVE-2015-9253: Fixed endless loop when the master process restarts a child process using program execution functions (bsc#1081790).

This update for php7 fixes the following issues:

• CVE-2017-8923: Fixed denial of service (application crash) when using .= with a long string (zend_string_extend func in Zend/zend_string.h) (bsc#1038980).

This update for php7 fixes the following issues:

• Version update to 7.2.34 [jsc#SLE-23639]

• CVE-2022-37454: Fixed SHA-3 buffer overflow (bsc#1204577).

• Fix integer overflow in PHP_SHA3##bits (bsc#1204577#c26).

This update for php74 fixes the following issues:

• Version update to 7.4.33:

• CVE-2022-31630: Fixed out-of-bounds read due to insufficient input validation in imageloadfont() (bsc#1204979).

• CVE-2022-37454: Fixed buffer overflow in hash_update() on long parameter (bsc#1204577).

• Version update to 7.4.32 (jsc#SLE-23639)

• CVE-2022-31628: Fixed an uncontrolled recursion in the phar uncompressor while decompressing 'quines' gzip files. (bsc#1203867)

• CVE-2022-31629: Fixed a bug which could lead an attacker to set an insecure cookie that will treated as secure in the victim's browser. (bsc#1203870)

This update for php7 fixes the following issues:

• Version update to 7.4.33:

• CVE-2022-31630: Fixed out-of-bounds read due to insufficient input validation in imageloadfont() (bsc#1204979).

• CVE-2022-37454: Fixed buffer overflow in hash_update() on long parameter (bsc#1204577).

• Version update to 7.4.32 (jsc#SLE-23639)

• CVE-2022-31628: Fixed an uncontrolled recursion in the phar uncompressor while decompressing 'quines' gzip files. (bsc#1203867)

• CVE-2022-31629: Fixed a bug which could lead an attacker to set an insecure cookie that will treated as secure in the victim's browser. (bsc#1203870)

It was discovered that PHP incorrectly handled certain scripts. An attacker could possibly use this issue to cause a denial of service. (CVE-2015-9253, CVE-2017-8923, CVE-2017-9118, CVE-2017-9120)

It was discovered that PHP incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service, or possibly obtain sensitive information. (CVE-2017-9119)

It was discovered that PHP incorrectly handled certain scripts with XML parsing functions. An attacker could possibly use this issue to obtain sensitive information. (CVE-2021-21707)

USN-5300-1 fixed vulnerabilities in PHP. This update provides the corresponding updates for Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.

Original advisory details:

It was discovered that PHP incorrectly handled certain scripts. An attacker could possibly use this issue to cause a denial of service. (CVE-2015-9253, CVE-2017-8923, CVE-2017-9118, CVE-2017-9120)

It was discovered that PHP incorrectly handled certain inputs. An attacker could possibly use this issue to cause a denial of service, or possibly obtain sensitive information. (CVE-2017-9119)

It was discovered that PHP incorrectly handled certain scripts with XML parsing functions. An attacker could possibly use this issue to obtain sensitive information. (CVE-2021-21707)