Fedora 34 Upgrade: FEDORA-2021-9f68f5f752 Critical PHP-FPM Risk

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.

**PHP version 7.4.25** (21 Oct 2021) **DOM:** * Fixed bug php#81433

(DOMElement::setIdAttribute() called twice may remove ID). (Viktor Volkov)

**FFI:** * Fixed bug php#79576 ("TYPE *" shows unhelpful message when type is

not defined). (Dmitry) **Fileinfo:** * Fixed bug php#78987 (High memory usage

during encoding detection). (Anatol) **Filter:** * Fixed bug php#61700

(FILTER_FLAG_IPV6/FILTER_FLAG_NO_PRIV|RES_RANGE failing). (cmb, Nikita)

**FPM:** * Fixed bug php#81026 (PHP-FPM oob R/W in root process leading to

privilege escalation) (**CVE-2021-21703**). (Jakub Zelenka) **SPL:** * Fixed

bug php#80663 (Recursive SplFixedArray::setSize() may cause double-free). (cmb,

Nikita, Tyson Andre) **Streams:** * Fixed bug php#81475 (stream_isatty emits

warning with attached stream wrapper). (cmb) **XML:** * Fixed bug php#70962

(XML_OPTION_SKIP_WHITE strips embedded whitespace). (Aliaksandr Bystry, cmb)

* Wed Oct 20 2021 Remi Collet - 7.4.25-1

- Update to 7.4.25 - https://www.php.net/releases/7_4_24.php

[ 1 ] Bug #2016535 - CVE-2021-21703 php: Local privilege escalation via PHP-FPM

https://bugzilla.redhat.com/show_bug.cgi?id=2016535

su -c 'dnf upgrade --advisory FEDORA-2021-9f68f5f752' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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