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CVE-2023-33202

18
FAUCET Score

CVE-2023-33202 is a Denial of Service (DoS) vulnerability affecting Bouncy Castle for Java versions prior to 1.73, and BC-FJA 1.0.2.3 and earlier. It stems from a flaw in the PEMParser class, where specially crafted ASN.1 data within an OpenSSL PEM encoded stream can trigger an OutOfMemoryError. This vulnerability has a CVSS score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring user interaction, and leading to high availability impact. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.73CPE matchmatch criteria
cpe:2.3:a:bouncycastle:bouncy_castle_for_java:*:*:*:*:*:*:*:*
< 1.0.2.4CPE matchmatch criteria
cpe:2.3:a:bouncycastle:fips_java_api:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.93%
Probability of exploitation in next 30 days
EPSS Percentile
57.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0093 is in the 67th percentile among its peer group of 5,760 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (21)

mavenpatch availablevia ghsa
Product: org.bouncycastle:bcpkix-jdk18onFixed in: 1.73
mavenpatch availablevia ghsa
Product: org.bouncycastle:bcprov-jdk18onFixed in: 1.73
mavenpatch availablevia ghsa
Product: org.bouncycastle:bcprov-ext-jdk15onFixed in: 1.73
mavenpatch availablevia ghsa
Product: org.bouncycastle:bcprov-ext-jdk16Fixed in: 1.73
mavenpatch availablevia ghsa
Product: org.bouncycastle:bcprov-jdk14Fixed in: 1.73
mavenpatch availablevia ghsa
Product: org.bouncycastle:bcprov-jdk15Fixed in: 1.73
mavenpatch availablevia ghsa
Product: org.bouncycastle:bcprov-jdk15to18Fixed in: 1.73
mavenpatch availablevia ghsa
Product: org.bouncycastle:bcprov-jdk16Fixed in: 1.73
redhatpatch availablevia redhat_api
Product: Red Hat AMQ Streams 2.7.0
View patch
redhatvendor investigatingvia redhat_api
Product: OpenShift Developer Tools and ServicesFixed in: jenkins-2-plugins
redhatvendor investigatingvia redhat_api
Product: OpenShift Developer Tools and ServicesFixed in: jenkins
redhatno patchvia redhat_api
Product: Red Hat AMQ Broker 7Fixed in: bcpkix
redhatno patchvia redhat_api
Product: Red Hat Decision Manager 7Fixed in: bcpkix
redhatno patchvia redhat_api
Product: Red Hat Fuse 7Fixed in: bcpkix
redhatno patchvia redhat_api
Product: Red Hat Process Automation 7Fixed in: bcpkix
redhatend of lifevia redhat_api
Product: Red Hat JBoss Data Grid 7Fixed in: bcpkix
redhatend of lifevia redhat_api
Product: streams for Apache KafkaFixed in: bcpkix
redhatend of lifevia redhat_api
Product: Red Hat Integration Camel K 1Fixed in: bcpkix
redhatend of lifevia redhat_api
Product: Red Hat build of Apicurio Registry 2Fixed in: bcpkix
redhatend of lifevia redhat_api
Product: Red Hat build of Debezium 2Fixed in: bcpkix
redhatend of lifevia redhat_api
Product: Red Hat Data Grid 8Fixed in: bcpkix

Vendor Advisories (2)

mavenGHSA-wjxj-5m7g-mg7qmedium

Bouncy Castle Denial of Service (DoS)

Nov 23, 2023
redhatCVE-2023-33202Moderate

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

Nov 23, 2023

References

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