// For flags

CVE-2023-33202

bc-java: Out of memory while parsing ASN.1 crafted data in org.bouncycastle.openssl.PEMParser class

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Bouncy Castle for Java before 1.73 contains a potential Denial of Service (DoS) issue within the Bouncy Castle org.bouncycastle.openssl.PEMParser class. This class parses OpenSSL PEM encoded streams containing X.509 certificates, PKCS8 encoded keys, and PKCS7 objects. Parsing a file that has crafted ASN.1 data through the PEMParser causes an OutOfMemoryError, which can enable a denial of service attack. (For users of the FIPS Java API: BC-FJA 1.0.2.3 and earlier are affected; BC-FJA 1.0.2.4 is fixed.)

Bouncy Castle para Java anterior a 1.73 contiene un posible problema de denegación de servicio (DoS) dentro de la clase Bouncy Castle org.bouncycastle.openssl.PEMParser. Esta clase analiza secuencias codificadas OpenSSL PEM que contienen certificados X.509, claves codificadas PKCS8 y objetos PKCS7. El análisis de un archivo que ha creado datos ASN.1 a través de PEMParser provoca un OutOfMemoryError, que puede permitir un ataque de denegación de servicio.

A flaw was found in Bouncy Castle for the Java pkix module, which is vulnerable to a potential Denial of Service (DoS) issue within the org.bouncycastle.openssl.PEMParser class. This class parses OpenSSL PEM encoded streams containing X.509 certificates, PKCS8 encoded keys, and PKCS7 objects. Parsing a file that has crafted ASN.1 data through the PEMParser causes an OutOfMemoryError, which can enable a denial of service attack.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-05-18 CVE Reserved
  • 2023-11-23 CVE Published
  • 2024-10-11 CVE Updated
  • 2024-10-11 First Exploit
  • 2025-03-30 EPSS Updated
  • ---------- 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
Bouncycastle
Search vendor "Bouncycastle"
 Bouncy Castle For Java
Search vendor "Bouncycastle" for product "Bouncy Castle For Java"
 < 1.73
Search vendor "Bouncycastle" for product "Bouncy Castle For Java" and version " < 1.73"
-
Affected