CVE-2007-1661
First published: Wed Nov 07 2007(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| PCRE2 (Perl Compatible Regular Expressions) | =7.0 | |
| PCRE2 (Perl Compatible Regular Expressions) | =7.1 | |
| PCRE2 (Perl Compatible Regular Expressions) | <=7.2 | |
| Apple macOS Server | =10.4.11 | |
| Apple iOS and macOS | =10.4.11 |
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Reference Links
- http://www.pcre.org/changelog.txt
- http://www.debian.org/security/2007/dsa-1399
- http://mail.gnome.org/archives/gtk-devel-list/2007-November/msg00022.html
- https://issues.rpath.com/browse/RPL-1738
- http://security.gentoo.org/glsa/glsa-200711-30.xml
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:211
- http://www.novell.com/linux/security/advisories/2007_62_pcre.html
- http://www.securityfocus.com/bid/26346
- http://secunia.com/advisories/27538
- http://secunia.com/advisories/27543
- http://secunia.com/advisories/27554
- http://secunia.com/advisories/27741
- http://secunia.com/advisories/27773
- http://secunia.com/advisories/27697
- http://lists.apple.com/archives/security-announce/2007/Dec/msg00002.html
- http://www.us-cert.gov/cas/techalerts/TA07-352A.html
- http://secunia.com/advisories/28136
- http://bugs.gentoo.org/show_bug.cgi?id=198976
- http://security.gentoo.org/glsa/glsa-200801-02.xml
- http://secunia.com/advisories/28406
- http://secunia.com/advisories/28414
- http://security.gentoo.org/glsa/glsa-200801-18.xml
- http://security.gentoo.org/glsa/glsa-200801-19.xml
- http://secunia.com/advisories/28714
- http://secunia.com/advisories/28720
- https://www.redhat.com/archives/fedora-package-announce/2008-March/msg00181.html
- http://secunia.com/advisories/29267
- http://lists.apple.com/archives/security-announce/2008/Mar/msg00001.html
- http://secunia.com/advisories/29420
- http://security.gentoo.org/glsa/glsa-200805-11.xml
- http://secunia.com/advisories/30155
- http://secunia.com/advisories/30219
- http://secunia.com/advisories/30106
- http://www.debian.org/security/2008/dsa-1570
- http://www.vupen.com/english/advisories/2007/4238
- http://www.vupen.com/english/advisories/2007/3790
- http://www.vupen.com/english/advisories/2007/3725
- http://www.vupen.com/english/advisories/2008/0924/references
- http://docs.info.apple.com/article.html?artnum=307562
- http://docs.info.apple.com/article.html?artnum=307179
- https://exchange.xforce.ibmcloud.com/vulnerabilities/38274
- https://usn.ubuntu.com/547-1/
- http://www.securityfocus.com/archive/1/483579/100/0/threaded
- http://www.securityfocus.com/archive/1/483357/100/0/threaded
Frequently Asked Questions
What is the severity of CVE-2007-1661?
CVE-2007-1661 is considered a medium severity vulnerability due to the potential for denial of service and information disclosure.
How do I fix CVE-2007-1661?
To fix CVE-2007-1661, upgrade the PCRE library to version 7.3 or later.
Which software is affected by CVE-2007-1661?
CVE-2007-1661 affects versions of the Perl-Compatible Regular Expression library prior to 7.3 and certain versions of macOS and Mac OS X Server.
What type of attacks can be executed using CVE-2007-1661?
CVE-2007-1661 can allow context-dependent attackers to cause a denial of service or potentially access sensitive information.
Is CVE-2007-1661 specific to any programming language?
CVE-2007-1661 is related to the Perl-Compatible Regular Expression library, which is used in multiple programming languages, particularly those that utilize regex functions.
- agent/references
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- collector/mitre-cve
- source/MITRE
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- agent/author
- agent/severity
- agent/remedy
- agent/weakness
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- collector/nvd-historical
- agent/software-canonical-lookup-request
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- vendor/pcre
- canonical/pcre2 (perl compatible regular expressions)
- version/pcre2 (perl compatible regular expressions)/7.0
- version/pcre2 (perl compatible regular expressions)/7.1
- version/pcre2 (perl compatible regular expressions)/7.2
- vendor/apple
- canonical/apple macos server
- version/apple macos server/10.4.11
- canonical/apple ios and macos
- version/apple ios and macos/10.4.11