Vulnerability Description
The function number_format is vulnerable to a heap overflow issue when its second argument ($dec_points) is excessively large. The internal implementation of the function will cause a string to be created with an invalid length, which can then interact poorly with other functions. This affects all supported versions of HHVM (3.30.1 and 3.27.5 and below).
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hhvm | <= 3.27.5 |
Related Weaknesses (CWE)
References
- https://github.com/facebook/hhvm/commit/190ffdf6c8b1ec443be202c7d69e63a7e3da25e3PatchThird Party Advisory
- https://hhvm.com/blog/2019/01/14/hhvm-3.30.2.htmlRelease NotesVendor Advisory
- https://github.com/facebook/hhvm/commit/190ffdf6c8b1ec443be202c7d69e63a7e3da25e3PatchThird Party Advisory
- https://hhvm.com/blog/2019/01/14/hhvm-3.30.2.htmlRelease NotesVendor Advisory
FAQ
What is CVE-2018-6345?
CVE-2018-6345 is a vulnerability with a CVSS score of 9.8 (CRITICAL). The function number_format is vulnerable to a heap overflow issue when its second argument ($dec_points) is excessively large. The internal implementation of the function will cause a string to be cre...
How severe is CVE-2018-6345?
CVE-2018-6345 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2018-6345?
Check the references section above for vendor advisories and patch information. Affected products include: Facebook Hhvm.