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ruby: Memory allocation failure in Ruby regex engine (remotely exploitable DoS)

🗓️ 21 Oct 2008 14:52:00Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 8 Views

Remote denial of service due to Ruby regular expression engine memory allocation failure on long socket requests, demonstrated on WEBrick.

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Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux4i386irb0:1.8.1-7.el4_7.1irb-0:1.8.1-7.el4_7.1.i386.rpm
Red Hat Enterprise Linux4ia64irb0:1.8.1-7.el4_7.1irb-0:1.8.1-7.el4_7.1.ia64.rpm
Red Hat Enterprise Linux4ppcirb0:1.8.1-7.el4_7.1irb-0:1.8.1-7.el4_7.1.ppc.rpm
Red Hat Enterprise Linux4s390irb0:1.8.1-7.el4_7.1irb-0:1.8.1-7.el4_7.1.s390.rpm
Red Hat Enterprise Linux4s390xirb0:1.8.1-7.el4_7.1irb-0:1.8.1-7.el4_7.1.s390x.rpm
Red Hat Enterprise Linux4x86_64irb0:1.8.1-7.el4_7.1irb-0:1.8.1-7.el4_7.1.x86_64.rpm
Red Hat Enterprise Linux4i386ruby0:1.8.1-7.el4_7.1ruby-0:1.8.1-7.el4_7.1.i386.rpm
Red Hat Enterprise Linux4ia64ruby0:1.8.1-7.el4_7.1ruby-0:1.8.1-7.el4_7.1.ia64.rpm
Red Hat Enterprise Linux4ppcruby0:1.8.1-7.el4_7.1ruby-0:1.8.1-7.el4_7.1.ppc.rpm
Red Hat Enterprise Linux4s390ruby0:1.8.1-7.el4_7.1ruby-0:1.8.1-7.el4_7.1.s390.rpm
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25 Jun 2026 10:35Current
7.2High risk
Vulners AI Score7.2
CVSS 25
EPSS0.15678
8