CVE-2018-6337

Published: 31 December 2018

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.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
hhvm Launchpad, Ubuntu, Debian	artful	Not vulnerable
	bionic	Not vulnerable
	trusty	Does not exist
	upstream	Needs triage
	xenial	Not vulnerable

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	High
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

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