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CVE-2007-1661

UnknownEPSS 2.49%

Last modified

CVE-2007-1661 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 2.49% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
2.49%

82.6th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
PcrePerl-Compatible Regular Expression Library<= 7.2
PcrePerl-Compatible Regular Expression Library7.0
PcrePerl-Compatible Regular Expression Library7.1
AppleMac Os X10.4.11
AppleMac Os X Server10.4.11

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2007-1661?
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.
How severe is CVE-2007-1661?
Severity scoring for CVE-2007-1661 is pending analysis. The EPSS model estimates a 2.49% probability of exploitation in the next 30 days.
How do I fix CVE-2007-1661?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST