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ruby: Buffer under-read in String#unpack

🗓️ 29 Apr 2020 10:12:16Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

Buffer under-read in Ruby String#unpack enables disclosure of arbitrary memory with a crafted unpack format.

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Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux7.5ppc64ruby0:2.0.0.648-36.el7_5ruby-0:2.0.0.648-36.el7_5.ppc64.rpm
Red Hat Enterprise Linux7.5ppc64leruby0:2.0.0.648-36.el7_5ruby-0:2.0.0.648-36.el7_5.ppc64le.rpm
Red Hat Enterprise Linux7.5s390xruby0:2.0.0.648-36.el7_5ruby-0:2.0.0.648-36.el7_5.s390x.rpm
Red Hat Enterprise Linux7.5x86_64ruby0:2.0.0.648-36.el7_5ruby-0:2.0.0.648-36.el7_5.x86_64.rpm
Red Hat Enterprise Linux7.5ppcruby-debuginfo0:2.0.0.648-36.el7_5ruby-debuginfo-0:2.0.0.648-36.el7_5.ppc.rpm
Red Hat Enterprise Linux7.5ppc64ruby-debuginfo0:2.0.0.648-36.el7_5ruby-debuginfo-0:2.0.0.648-36.el7_5.ppc64.rpm
Red Hat Enterprise Linux7.5ppc64leruby-debuginfo0:2.0.0.648-36.el7_5ruby-debuginfo-0:2.0.0.648-36.el7_5.ppc64le.rpm
Red Hat Enterprise Linux7.5s390ruby-debuginfo0:2.0.0.648-36.el7_5ruby-debuginfo-0:2.0.0.648-36.el7_5.s390.rpm
Red Hat Enterprise Linux7.5s390xruby-debuginfo0:2.0.0.648-36.el7_5ruby-debuginfo-0:2.0.0.648-36.el7_5.s390x.rpm
Red Hat Enterprise Linux7.5x86_64ruby-debuginfo0:2.0.0.648-36.el7_5ruby-debuginfo-0:2.0.0.648-36.el7_5.x86_64.rpm
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25 Jun 2026 10:55Current
7.4High risk
Vulners AI Score7.4
CVSS 25
CVSS 37.5
EPSS0.07825
4