CVE-2018-6345 The function number_format is vulnerable to a heap overflow issue when its second argument ($dec_points) is excessively large. The internal implementation of the function will cause a string to be cre...
CriticalCVSS 9.8
EPSS 1.7%
- Published
- Updated
- Exploit status
- No public exploit known
Description
The function number_format is vulnerable to a heap overflow issue when its second argument ($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 products
| Product | Affected versions | Fixed in |
|---|---|---|
| facebook hhvm | <= 3.27.5 | No fix listed |
| facebook hhvm | >= 3.28.0, <= 3.30.1 | No fix listed |
| facebook hhvm | = 3.30.2 | No fix listed |
| facebook hhvm | >= 3.30.0 | No fix listed |
| facebook hhvm | = 3.27.6 | No fix listed |
| facebook hhvm | < 3.27.6 | 3.27.6 |
References
- github.com patch third-party-advisory
- hhvm.com release-notes vendor-advisory