Moderate: php:7.4 security, bug fix, and enhancement update

Topic

An update for the php:7.4 module is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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 Red Hat Enterprise Linux 8.7 Release Notes linked from the References section.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the updated packages, the httpd daemon must be restarted for the update to take effect.

Affected Products

• Red Hat Enterprise Linux for x86_64 8 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for ARM 64 8 aarch64

Fixes

• BZ - 1988558 - CVE-2021-32610 php-pear: Directory traversal vulnerability
• BZ - 2026045 - CVE-2021-21707 php: Special character breaks path in xml parsing
• BZ - 2055422 - pecl upgrade fails unexpectedly
• BZ - 2055879 - CVE-2021-21708 php: Use after free due to php_filter_float() failing for ints

CVEs

• CVE-2021-21707
• CVE-2021-21708
• CVE-2021-32610

References

• https://access.redhat.com/security/updates/classification/#moderate
• https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.7_release_notes/index