Vulnerability Description
Call to the scrypt_enc() function in HHVM can lead to heap corruption by using specifically crafted parameters (N, r and p). This happens if the parameters are configurable by an attacker for instance by providing the output of scrypt_enc() in a context where Hack/PHP code would attempt to verify it by re-running scrypt_enc() with the same parameters. This could result in information disclosure, memory being overwriten or crashes of the HHVM process. This issue affects versions 4.3.0, 4.4.0, 4.5.0, 4.6.0, 4.7.0, 4.8.0, versions 3.30.5 and below, and all versions in the 4.0, 4.1, and 4.2 series.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Hiphop Virtual Machine | <= 3.30.5 |
Related Weaknesses (CWE)
References
- https://github.com/facebook/hhvm/commit/cc331e4349e91706a673e2a09f1f2ea5bbb33815PatchThird Party Advisory
- https://hhvm.com/blog/2019/06/10/hhvm-4.9.0.htmlRelease NotesVendor Advisory
- https://github.com/facebook/hhvm/commit/cc331e4349e91706a673e2a09f1f2ea5bbb33815PatchThird Party Advisory
- https://hhvm.com/blog/2019/06/10/hhvm-4.9.0.htmlRelease NotesVendor Advisory
FAQ
What is CVE-2019-3570?
CVE-2019-3570 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Call to the scrypt_enc() function in HHVM can lead to heap corruption by using specifically crafted parameters (N, r and p). This happens if the parameters are configurable by an attacker for instance...
How severe is CVE-2019-3570?
CVE-2019-3570 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-2019-3570?
Check the references section above for vendor advisories and patch information. Affected products include: Facebook Hiphop Virtual Machine.