CVE-2021-21708

In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.

PHP is an HTML-embedded scripting language. PHP attempts to make it easy for developers to write dynamically generated web pages. PHP also offers built-in database integration for several commercial and non-commercial database management systems, so writing a database-enabled webpage with PHP is fairly simple. The most common use of PHP coding is probably as a replacement for CGI scripts. The php package contains the module (often referred to as mod_php) which adds support for the PHP language to Apache HTTP Server.

Security Fix(es):

In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.(CVE-2021-21708)

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 (8.0.20). (BZ#2100876)

Security Fix(es):

• php: Use after free due to php_filter_float() failing for ints (CVE-2021-21708)

• php: Uninitialized array in pg_query_params() leading to RCE (CVE-2022-31625)

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 8.7 Release Notes linked from the References section.

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 (7.4.30), php-pear (1.10.13). (BZ#2055422)

Security Fix(es):

• php: Special character breaks path in xml parsing (CVE-2021-21707)

• php: Use after free due to php_filter_float() failing for ints (CVE-2021-21708)

• php-pear: Directory traversal vulnerability (CVE-2021-32610)

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 8.7 Release Notes linked from the References section.

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 (8.0.20). (BZ#2095752)

Security Fix(es):

• php: Use after free due to php_filter_float() failing for ints (CVE-2021-21708)

• php: Uninitialized array in pg_query_params() leading to RCE (CVE-2022-31625)

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 9.1 Release Notes linked from the References section.

In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.

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 (8.0.20). (BZ#2100876)

Security Fix(es):

• php: Use after free due to php_filter_float() failing for ints (CVE-2021-21708)
• php: Uninitialized array in pg_query_params() leading to RCE (CVE-2022-31625)

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 AlmaLinux Release Notes linked from the References section.

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 (7.4.30), php-pear (1.10.13). (BZ#2055422)

Security Fix(es):

• php: Special character breaks path in xml parsing (CVE-2021-21707)
• php: Use after free due to php_filter_float() failing for ints (CVE-2021-21708)
• php-pear: Directory traversal vulnerability (CVE-2021-32610)

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 AlmaLinux Release Notes linked from the References section.

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 (8.0.20). (BZ#2095752)

Security Fix(es):

• php: Use after free due to php_filter_float() failing for ints (CVE-2021-21708)
• php: Uninitialized array in pg_query_params() leading to RCE (CVE-2022-31625)

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 AlmaLinux Release Notes linked from the References section.

In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.

In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.

In PHP versions 7.4.x below 7.4.28, 8.0.x below 8.0.16, and 8.1.x below 8.1.3, when using filter functions with FILTER_VALIDATE_FLOAT filter and min/max limits, if the filter fails, there is a possibility to trigger use of allocated memory after free, which can result it crashes, and potentially in overwrite of other memory chunks and RCE. This issue affects: code that uses FILTER_VALIDATE_FLOAT with min/max limits.

• CVE-2021-21708: move releasing of zval, so it will be after assigning a new zval

• CVE-2021-21708: move releasing of zval, so it is released only after assignment of a new zval

This update for php7 fixes the following issues:

• CVE-2021-21708: Fixed a memory corruption issue when processing integers from an untrusted source (bsc#1196252).

These are all security issues fixed in the php8-8.1.3-1.1 package on the GA media of openSUSE Tumbleweed.

These are all security issues fixed in the php7-7.4.28-1.1 package on the GA media of openSUSE Tumbleweed.

This update for php74 fixes the following issues:

• CVE-2021-21708: Fixed use after free due to php_filter_float() failing for ints (bsc#1196252).

This update for php7 fixes the following issues:

• CVE-2021-21708: Fixed a memory corruption issue when processing integers from an untrusted source (bsc#1196252).

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)

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, or possibly execute arbitrary code.