CVE-2020-1918

EUVD-2020-12739
In-memory file operations (ie: using fopen on a data URI) did not properly restrict negative seeking, allowing for the reading of memory prior to the in-memory buffer. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 55%
Affected Products (NVD)
VendorProductVersion
facebookhhvm
𝑥
< 4.56.3
facebookhhvm
4.57.0 ≤
𝑥
< 4.80.2
facebookhhvm
4.81.0 ≤
𝑥
< 4.93.2
facebookhhvm
4.94.0
facebookhhvm
4.95.0
facebookhhvm
4.96.0
facebookhhvm
4.97.0
facebookhhvm
4.98.0
𝑥
= Vulnerable software versions
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
hhvm
bionic
needs-triage
focal
dne
groovy
dne
hirsute
dne
impish
dne
jammy
dne
kinetic
dne
lunar
dne
mantic
dne
noble
dne
trusty
dne
xenial
needs-triage