Description
folly::secureRandom will re-use a buffer between parent and child processes when fork() is called. That will result in multiple forked children producing repeat (or similar) results. This affects HHVM 3.26 prior to 3.26.3 and the folly library between v2017.12.11.00 and v2018.08.09.00.
Scores
CVSS v3
7.5
EPSS
0.0027
EPSS Percentile
50.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-119
CWE-212
Status
published
Products (2)
facebook/folly
2017.12.11.00 - 2018.08.09.00
facebook/hhvm
3.26 - 3.26.3
Published
Dec 31, 2018
Tracked Since
Feb 18, 2026