CVE-2020-1900
CVE-2020-1900
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 1.4%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
11 Mar 2021Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
When unserializing an object with dynamic properties HHVM needs to pre-reserve the full size of the dynamic property array before inserting anything into it. Otherwise the array might resize, invalidating previously stored references. This pre-reservation was not occurring in HHVM prior to v4.32.3, between versions 4.33.0 and 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0.
Affected products
Facebook · HHVMWant to know if your infrastructure is exposed to this?
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