Vulnerability in Facebook Hhvm
CVE-2020-1899
The unserialize() function supported a type code, "S", which was meant to be supported only for APC serialization. This type code allowed arbitrary memory addresses to be accessed as if they were static StringData objects. This issue affec…
EPSS: 0.004 (58.6th percentile) — read the EPSS interpretation.
Affected products
- Facebook Hhvm — versions 4.62.1, 4.62.0, 4.61.1
Weakness classification (CWE)
References
- hhvm.com/blog/2020/06/30/security-update.html (x_refsource_CONFIRM)
- github.com/facebook/hhvm/commit/1107228a5128d3ca1c4add8ac1635d933cbbe2e9 (x_refsource_MISC)