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Vulnerability record · CVE-2023-33202 · published 23 November 2023

CVE-2023-33202: Bouncycastle bouncy castle for java uncontrolled resource consumption vulnerability

Bouncycastle · Bouncy Castle For Java

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.)

5.5 CVSS 3.1 Medium EPSS 1.00% · top 36.7% CWE-400 · Uncontrolled resource consumption
5.5CVSS 3.1 base score
1.00%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
7References, 2 tagged exploit
17 Jun 2026Last modified by NVD

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. (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.)

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bouncycastle.org Product
https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902023%E2%80%9033202
https://github.com/bcgit/bc-java/wiki/CVE-2023-33202 ExploitThird Party Advisory
https://security.netapp.com/advisory/ntap-20240125-0001/ Third Party Advisory
https://bouncycastle.org Product
https://github.com/bcgit/bc-java/wiki/CVE-2023-33202 ExploitThird Party Advisory
https://security.netapp.com/advisory/ntap-20240125-0001/ Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-33202), CISA KEV, FIRST EPSS (scores of 2026-11-14). This page is refreshed as NVD updates the record.