CVE-2016-2338

An exploitable heap overflow vulnerability exists in the Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function heap buffer "head" allocation is made based on tags array length. Specially constructed object passed as element of tags array can increase this array size after mentioned allocation and cause heap overflow.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
certccCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 92%
VendorProductVersion
ruby-langruby
2.2.2
ruby-langruby
2.3.0
debiandebian_linux
8.0
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
ruby-psych
eoan
not-affected
bionic
not-affected
xenial
dne
trusty
dne
ruby1.9.1
eoan
dne
bionic
dne
xenial
dne
trusty
dne
ruby2.0
eoan
dne
bionic
dne
xenial
dne
trusty
dne
ruby2.3
eoan
dne
bionic
dne
xenial
not-affected
trusty
dne
ruby2.5
eoan
not-affected
bionic
not-affected
xenial
dne
trusty
dne
ruby2.7
eoan
dne
bionic
dne
xenial
dne
trusty
dne