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Sicherheit: Denial of Service in PCRE
Aktuelle Meldungen Distributionen
Name: Denial of Service in PCRE
ID: FEDORA-2017-2c4ddb3ca2
Distribution: Fedora
Plattformen: Fedora 24
Datum: Mi, 26. April 2017, 23:03
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7186

Originalnachricht

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Fedora Update Notification
FEDORA-2017-2c4ddb3ca2
2017-04-26 13:59:41.364410
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Name : pcre2
Product : Fedora 24
Version : 10.21
Release : 18.fc24
URL : http://www.pcre.org/
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.

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.

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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 UTF validation
routine.
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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
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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
http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

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/keys
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