CVEvulnerability
CVE-2018-6345
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2019-01-15
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-122, CWE-787
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).
Affected configurations
• facebook hhvm (<= 3.27.5)
• facebook hhvm (>= 3.28.0 <= 3.30.1)
Related
References
- https://github.com/facebook/hhvm/commit/190ffdf6c8b1ec443be202c7d69e63a7e3da25e3 Patch, Third Party Advisory
- https://hhvm.com/blog/2019/01/14/hhvm-3.30.2.html Release Notes, Vendor Advisory
- https://github.com/facebook/hhvm/commit/190ffdf6c8b1ec443be202c7d69e63a7e3da25e3 Patch, Third Party Advisory
- https://hhvm.com/blog/2019/01/14/hhvm-3.30.2.html Release Notes, Vendor Advisory