{"id":"CVE-2023-33202","aliases":["GHSA-wjxj-5m7g-mg7q"],"url":"https://o3.security/vulnerability/CVE-2023-33202","summary":"Bouncy Castle Denial of Service (DoS)","details":"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.)","published":"2023-11-23T00:00:00Z","modified":"2026-08-07T11:31:01.694309622Z","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-ext-jdk16","fixedVersion":"1.73"},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk14","fixedVersion":"1.73"},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk15","fixedVersion":"1.73"},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk15to18","fixedVersion":"1.73"},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk16","fixedVersion":"1.73"},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk15on","fixedVersion":null},{"ecosystem":"Maven","name":"org.bouncycastle:bcpkix-jdk18on","fixedVersion":"1.73"},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-ext-jdk15on","fixedVersion":"1.73"},{"ecosystem":"Maven","name":"org.bouncycastle:bcprov-jdk18on","fixedVersion":"1.73"}],"fix":null,"references":[{"type":"WEB","url":"https://bouncycastle.org"},{"type":"WEB","url":"https://github.com/bcgit/bc-java/wiki/CVE%E2%80%902023%E2%80%9033202"},{"type":"WEB","url":"https://github.com/bcgit/bc-java/wiki/CVE-2023-33202"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/33xxx/CVE-2023-33202.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-33202"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20240125-0001/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:31:01.694309622Z"}}