CVE-2018-6337: Buffer Overflow
First published: Mon Dec 31 2018(Updated: )
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.
Credit: cve-assign@fb.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Facebook Folly | >=2017.12.11.00<=2018.08.09.00 | |
| Facebook HHVM | >=3.26<3.26.3 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2018-6337.
What is the severity of CVE-2018-6337?
The severity of CVE-2018-6337 is high with a CVSS score of 7.5.
Which software is affected by CVE-2018-6337?
HHVM versions 3.26 prior to 3.26.3 and the folly library between v2017.12.11.00 and v2018.08.09.00 are affected by CVE-2018-6337.
How does CVE-2018-6337 impact the affected software?
CVE-2018-6337 allows multiple forked children of the affected software to produce repeat or similar results due to buffer re-use between parent and child processes.
How can I fix CVE-2018-6337?
To fix CVE-2018-6337, update HHVM to version 3.26.3 or later and update the folly library to a version after v2018.08.09.00.
- collector/nvd-index
- agent/weakness
- agent/references
- agent/severity
- agent/author
- agent/event
- agent/tags
- agent/type
- agent/description
- agent/last-modified-date
- agent/remedy
- agent/softwarecombine
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- vendor/facebook
- canonical/facebook folly
- version/facebook folly/2017.12.11.00
- version/facebook folly/2018.08.09.00
- canonical/facebook hhvm
- version/facebook hhvm/3.26