// For flags

CVE-2023-52425

expat: parsing large tokens can trigger a denial of service

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

libexpat through 2.5.0 allows a denial of service (resource consumption) because many full reparsings are required in the case of a large token for which multiple buffer fills are needed.

libexpat hasta 2.5.0 permite una denegación de servicio (consumo de recursos) porque se requieren muchos análisis completos en el caso de un token grande para el cual se necesitan múltiples rellenos de búfer.

A flaw was found in Expat (libexpat). When parsing a large token that requires multiple buffer fills to complete, Expat has to re-parse the token from start numerous times. This process may trigger excessive resource consumption, leading to a denial of service.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-02-04 CVE Reserved
  • 2024-02-04 CVE Published
  • 2024-06-15 EPSS Updated
  • 2024-08-26 CVE Updated
  • 2024-08-26 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-400: Uncontrolled Resource Consumption
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Libexpat Project
Search vendor "Libexpat Project"
 Libexpat
Search vendor "Libexpat Project" for product "Libexpat"
 <= 2.5.0
Search vendor "Libexpat Project" for product "Libexpat" and version " <= 2.5.0"
-
Affected