DescriptionThe backtrack compilation code in the Irregex package (aka IrRegular Expressions) before 0.9.6 for Scheme allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression with a repeating pattern.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium (attack range: remote)
Debian Bugs851278

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
chicken (PTS)jessie4.9.0.1-1vulnerable
buster, sid4.12.0-0.3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs


[stretch] - chicken <no-dsa> (Minor issue)
[jessie] - chicken <no-dsa> (Minor issue)
[wheezy] - chicken <no-dsa> (Minor issue)
For chicken vulnerable code in ./irregex-core.scm

Search for package or bug name: Reporting problems