VDB
CVE-2020-1898
CVE-2020-1898
PUBLISHED
CVSS 7.5 HIGH
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.
EPSS 1.21% · 66.0th percentile
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Score
1.21%
66.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ubuntu:16.04:LTS | hhvm | 0, 3.11.0+dfsg-1, 3.11.1+dfsg-1 |
| Ubuntu:18.04:LTS | hhvm | *, 0, * |
Timeline
- Mar 11, 2021 CVE Published
- Apr 14, 2021 EPSS Score
- Jun 23, 2021 EPSS Score
- Aug 25, 2021 EPSS Score
- Dec 28, 2021 EPSS Score
- Jan 6, 2022 EPSS Score
- Feb 4, 2022 EPSS Score
- Mar 1, 2022 EPSS Score
- Apr 1, 2022 EPSS Score
- Jul 5, 2022 EPSS Score
- Sep 6, 2022 EPSS Score
- Nov 8, 2022 EPSS Score
References
- https://ubuntu.com/security/CVE-2020-1898 third-party-advisory
- https://github.com/facebook/hhvm/commit/1746dfb11fc0048366f34669e74318b8278a684c third-party-advisory
- https://hhvm.com/blog/2020/06/30/security-update.html third-party-advisory
- https://www.cve.org/CVERecord?id=CVE-2020-1898 third-party-advisory