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Fedora: pcre2 JIT Crash Fix for Unicode Properties - Critical Update

This release fixes a crash when finding a Unicode property for a character with a code point greater than 0x10ffff in UTF-32 library while UTF mode is disabled and JIT mode is enabled. It also fixes an incortect cast in UTF validation routine.. --------------------------------------------------------------------------------Fedora Update Notification FEDORA-2017-9c6430c2e2 2017-04-22 03:35:57.950750 --------------------------------------------------------------------------------Name : pcre2 Product : Fedora 25 Version : 10.23 Release : 6.fc25 URL : / Summary : Perl-compatible regular expression library Description : PCRE2 is a re-working of the original PCRE (Perl-compatible regular expression) library to provide an entirely new API. PCRE2 is written in C, and it has its own API. There are three sets of functions, one for the 8-bit library, which processes strings of bytes, one for the 16-bit library, which processes strings of 16-bit values, and one for the 32-bit library, which processes strings of 32-bit values. There are no C++ wrappers. This package provides support for strings in 8-bit and UTF-8 encodings. Install pcre2-utf16 or pcre2-utf32 packages for the other ones. The distribution does contain a set of C wrapper functions for the 8-bit library that are based on the POSIX regular expression API (see the pcre2posix man page). These can be found in a library called libpcre2posix. Note that this just provides a POSIX calling interface to PCRE2; the regular expressions themselves still follow Perl syntax and semantics. The POSIX API is restricted, and does not give full access to all of PCRE2's facilities. --------------------------------------------------------------------------------Update Information: This release fixes a crash when finding a Unicode property for a character with a code point greater than 0x10ffff in UTF-32 library while UTF mode is disabled and JIT mode is enabled. It also fixes an incortect cast in UTFvalidation routine. --------------------------------------------------------------------------------References: [ 1 ] Bug #1434504 - CVE-2017-7186 pcre: Invalid Unicode property lookup (8.41/7, 10.24/2) https://bugzilla.redhat.com/show_bug.cgi?id=1434504 --------------------------------------------------------------------------------This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade pcre2' 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/ -------------------------------------------------------------------------------- _______________________________________________ package-announce mailing list -- This email address is being protected from spambots. You need JavaScript enabled to view it. To unsubscribe send an email to This email address is being protected from spambots. You need JavaScript enabled to view it. . Tackling a significant failure in UTF-32 management within Fedora's pcre2 framework, guaranteeing reliability in regex functionalities.. Fedora Update, pcre2 Security, UTF-32 Crash Fix, Regex Library Update, Unicode Handling. . Severity: Critical. LinuxSecurity.com Team

Apr 22, 2017 •Critical Fedora