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Bouncy Castle Denial of Service (DoS)

Moderate severity GitHub Reviewed Published Nov 23, 2023 to the GitHub Advisory Database • Updated Sep 9, 2024

Package

maven org.bouncycastle:bcpkix-jdk18on (Maven)

Affected versions

< 1.73

Patched versions

1.73
maven org.bouncycastle:bcprov-ext-jdk15on (Maven)
< 1.73
1.73
maven org.bouncycastle:bcprov-ext-jdk16 (Maven)
< 1.73
1.73
maven org.bouncycastle:bcprov-jdk14 (Maven)
< 1.73
1.73
maven org.bouncycastle:bcprov-jdk15 (Maven)
< 1.73
1.73
maven org.bouncycastle:bcprov-jdk15on (Maven)
< 1.70
None
maven org.bouncycastle:bcprov-jdk15to18 (Maven)
< 1.73
1.73
maven org.bouncycastle:bcprov-jdk16 (Maven)
< 1.73
1.73
maven org.bouncycastle:bcprov-jdk18on (Maven)
< 1.73
1.73

Description

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.

References

Published by the National Vulnerability Database Nov 23, 2023
Published to the GitHub Advisory Database Nov 23, 2023
Reviewed Nov 24, 2023
Last updated Sep 9, 2024

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Local
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS score

0.045%
(17th percentile)

Weaknesses

CVE ID

CVE-2023-33202

GHSA ID

GHSA-wjxj-5m7g-mg7q

Source code

Credits

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