CVE-2020-1898

The fb_unserialize function did not impose a depth limit for nested deserialization. That meant a maliciously constructed string could cause deserialization to recurse, leading to stack exhaustion. This issue affected 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.

CVSS v3.0 7.5 HIGH
CVSS v2.0 5.0 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/facebook/hhvm/commit/1746dfb11fc0048366f34669e74318b8278a684c	Patch Third Party Advisory
https://hhvm.com/blog/2020/06/30/security-update.html	Vendor Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:facebook:hhvm::::::::
	cpe:2.3:a:facebook:hhvm::::::::
	cpe:2.3:a:facebook:hhvm:4.57.0:::::::*
	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:::::::*

Information

Published : 2021-03-10 17:15

Updated : 2021-03-17 12:50

NVD link : CVE-2020-1898

Mitre link : CVE-2020-1898

JSON object : View

CWE

CWE-674

Uncontrolled Recursion

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Products Affected

facebook

hhvm

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