CVEvulnerability

CVE-2020-1898

7.5 HIGH Published 2021-03-11 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-03-11
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-674

Description

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.

Affected configurations

• facebook hhvm (< 4.32.3) • facebook hhvm (>= 4.33.0 < 4.56.1) • facebook hhvm 4.57.0 • facebook hhvm 4.58.0 • facebook hhvm 4.58.1 • facebook hhvm 4.59.0 • facebook hhvm 4.60.0 • facebook hhvm 4.61.0 • facebook hhvm 4.62.0

Related

Weakness · CWE (1)

  • CWE-674 Uncontrolled Recursion weakness

References