CVE-2020-1898
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
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.
La función fb_unserialize no impuso un límite de profundidad para la deserialización anidada. Eso significaba que una cadena construida maliciosamente podría causar que una deserialización se repitiera, conllevando a un agotamiento de la pila. Este problema afectó a HHVM versiones anteriores a v4.32.3, entre las versiones 4.33.0 y 4.56.0, 4.57.0, 4.58.0, 4.58.1, 4.59.0, 4.60.0, 4.61.0, 4.62.0
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2019-12-02 CVE Reserved
- 2021-03-11 CVE Published
- 2023-11-24 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-674: Uncontrolled Recursion
CAPEC
References (2)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://github.com/facebook/hhvm/commit/1746dfb11fc0048366f34669e74318b8278a684c | 2021-03-17 |
| URL | Date | SRC |
|---|---|---|
| https://hhvm.com/blog/2020/06/30/security-update.html | 2021-03-17 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Facebook Search vendor "Facebook" | Hhvm Search vendor "Facebook" for product "Hhvm" | < 4.32.3 Search vendor "Facebook" for product "Hhvm" and version " < 4.32.3" | - |
Affected
| ||||||
| Facebook Search vendor "Facebook" | Hhvm Search vendor "Facebook" for product "Hhvm" | >= 4.33.0 < 4.56.1 Search vendor "Facebook" for product "Hhvm" and version " >= 4.33.0 < 4.56.1" | - |
Affected
| ||||||
| Facebook Search vendor "Facebook" | Hhvm Search vendor "Facebook" for product "Hhvm" | 4.57.0 Search vendor "Facebook" for product "Hhvm" and version "4.57.0" | - |
Affected
| ||||||
| Facebook Search vendor "Facebook" | Hhvm Search vendor "Facebook" for product "Hhvm" | 4.58.0 Search vendor "Facebook" for product "Hhvm" and version "4.58.0" | - |
Affected
| ||||||
| Facebook Search vendor "Facebook" | Hhvm Search vendor "Facebook" for product "Hhvm" | 4.58.1 Search vendor "Facebook" for product "Hhvm" and version "4.58.1" | - |
Affected
| ||||||
| Facebook Search vendor "Facebook" | Hhvm Search vendor "Facebook" for product "Hhvm" | 4.59.0 Search vendor "Facebook" for product "Hhvm" and version "4.59.0" | - |
Affected
| ||||||
| Facebook Search vendor "Facebook" | Hhvm Search vendor "Facebook" for product "Hhvm" | 4.60.0 Search vendor "Facebook" for product "Hhvm" and version "4.60.0" | - |
Affected
| ||||||
| Facebook Search vendor "Facebook" | Hhvm Search vendor "Facebook" for product "Hhvm" | 4.61.0 Search vendor "Facebook" for product "Hhvm" and version "4.61.0" | - |
Affected
| ||||||
| Facebook Search vendor "Facebook" | Hhvm Search vendor "Facebook" for product "Hhvm" | 4.62.0 Search vendor "Facebook" for product "Hhvm" and version "4.62.0" | - |
Affected
| ||||||