CVE Vulnerability

CVE-2020-1900

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.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://hhvm.com/blog/2020/06/30/security-update.html Vendor Advisory
https://github.com/facebook/hhvm/commit/c1c4bb0cf9e076aafaf4ff3515556ef9faf906f3 Patch Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:facebook:hhvm:4.58.0:*:*:*:*:*:*:*
cpe:2.3:a:facebook:hhvm:4.58.1:*:*:*:*:*:*:*
cpe:2.3:a:facebook:hhvm:4.59.0:*:*:*:*:*:*:*
cpe:2.3:a:facebook:hhvm:4.60.0:*:*:*:*:*:*:*
cpe:2.3:a:facebook:hhvm:4.61.0:*:*:*:*:*:*:*
cpe:2.3:a:facebook:hhvm:4.62.0:*:*:*:*:*:*:*
cpe:2.3:a:facebook:hhvm:4.57.0:*:*:*:*:*:*:*
cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*
cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*
Information

Published : 2021-03-11 01:15

Updated : 2021-03-18 02:10

NVD link : CVE-2020-1900

Mitre link : CVE-2020-1900

Products Affected
No products.
CWE
CWE-416