CVE-2007-1661

Name	CVE-2007-1661
Description	Perl-Compatible Regular Expression (PCRE) library before 7.3 backtracks too far when matching certain input bytes against some regex patterns in non-UTF-8 mode, which allows context-dependent attackers to obtain sensitive information or cause a denial of service (crash), as demonstrated by the "\X?\d" and "\P{L}?\d" patterns.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
References	DSA-1399-1, DSA-1570-1, DTSA-77-1
NVD severity	medium (attack range: remote)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
glib2.0 (PTS)	jessie	2.42.1-1	fixed
	stretch	2.50.3-2	fixed
	buster, sid	2.56.1-2	fixed
pcre3 (PTS)	jessie	2:8.35-3.3+deb8u4	fixed
	stretch	2:8.39-3	fixed
	buster	2:8.39-9	fixed
	sid	2:8.39-10	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin
glib2.0	source	(unstable)	2.14.3-1	unimportant
kazehakase	source	(unstable)	0.5.2-1	medium
kazehakase	source	etch	0.4.2-1etch1	medium	DSA-1570-1
pcre3	source	(unstable)	7.3-1	medium
pcre3	source	etch	6.7+7.4-2	medium	DSA-1399-1
pcre3	source	lenny	6.7+7.4-2+lenny1	medium	DTSA-77-1
pcre3	source	sarge	4.5+7.4-1	medium	DSA-1399-1

glib only embeds pcre in the udeb, no attack vector