CVE-2017-13098

BouncyCastle TLS prior to version 1.0.3, when configured to use the JCE (Java Cryptography Extension) for cryptographic functions, provides a weak Bleichenbacher oracle when any TLS cipher suite using RSA key exchange is negotiated. An attacker can recover the private key from a vulnerable application. This vulnerability is referred to as "ROBOT."

References

Affected packages

Git / github.com/bcgit/bc-java

Affected ranges

Type

GIT

Repo

https://github.com/bcgit/bc-java

Events

Introduced

Fixed

6de1c17dda8ffdb19431ffcadbce1836867a27a9

Fixed

a00b684465b38d722ca9a3543b8af8568e6bad5c

Database specific

Show details

{
    "cpe":  "cpe:2.3:a:bouncycastle:bc-java:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "1.59"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

Other

r1rv49

r1rv50

r1rv51

r1rv52

r1rv53

r1rv54

r1rv55

r1rv56

r1rv57

r1rv58

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-13098.json"

vanir_signatures

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        "deprecated":  false,
        "digest":  {
            "function_hash":  "289149566325291897423684006854774195716",
            "length":  827
        },
        "id":  "CVE-2017-13098-75c5c872",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/bcgit/bc-java/commit/a00b684465b38d722ca9a3543b8af8568e6bad5c",
        "target":  {
            "file":  "tls/src/main/java/org/bouncycastle/tls/crypto/impl/jcajce/JceDefaultTlsCredentialedDecryptor.java",
            "function":  "safeDecryptPreMasterSecret"
        }
    },
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        "deprecated":  false,
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            "threshold":  0.9
        },
        "id":  "CVE-2017-13098-81c60bc3",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/bcgit/bc-java/commit/a00b684465b38d722ca9a3543b8af8568e6bad5c",
        "target":  {
            "file":  "tls/src/main/java/org/bouncycastle/tls/crypto/impl/jcajce/JceDefaultTlsCredentialedDecryptor.java"
        }
    }
]

vanir_signatures_modified

"2026-08-07T14:48:52Z"