CVE-2016-1000338

In Bouncy Castle JCE Provider version 1.55 and earlier the DSA does not fully validate ASN.1 encoding of signature on verification. It is possible to inject extra elements in the sequence making up the signature and still have it validate, which in some cases may allow the introduction of 'invisible' data into a signed structure.

References

Affected packages

Git / github.com/bcgit/bc-java

Affected ranges

Type: GIT
Repo: https://github.com/bcgit/bc-java
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

b0c3ce99d43d73a096268831d0d120ffc89eac7f

Type: GIT
Repo: https://github.com/bcgit/bc-java
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

b0c3ce99d43d73a096268831d0d120ffc89eac7f

Database specific

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "1.38"
            },
            {
                "fixed": "1.56"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "6.4-NA"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "6.4"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "14.04"
            }
        ]
    }
]

vanir_signatures

[
    {
        "signature_type": "Function",
        "signature_version": "v1",
        "target": {
            "file": "prov/src/test/java/org/bouncycastle/jce/provider/test/DSATest.java",
            "function": "performTest"
        },
        "id": "CVE-2016-1000338-087c7fa8",
        "deprecated": false,
        "source": "https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f",
        "digest": {
            "function_hash": "260934301005839087771033825261480613861",
            "length": 2322.0
        }
    },
    {
        "signature_type": "Line",
        "signature_version": "v1",
        "target": {
            "file": "prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/dsa/DSASigner.java"
        },
        "id": "CVE-2016-1000338-7c04278f",
        "deprecated": false,
        "source": "https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f",
        "digest": {
            "line_hashes": [
                "136163138208565596251691075970191609612",
                "107562756255838380340501290306204437774",
                "256405273294590351025306411110688622024",
                "321391742634389090900092687248037489853",
                "6668448620659695156447218389951777055",
                "114414081459311079942728053419609401083",
                "224667266301163910456003187272837519895",
                "332764780958810242807759347728695018005",
                "2754744943816587054499795256365031272",
                "54339207175021658509884097720332228201",
                "260804928531546614162744774821933798241",
                "78059865186365016316398972156821482959",
                "197034695221731228794406326079488881854"
            ],
            "threshold": 0.9
        }
    },
    {
        "signature_type": "Function",
        "signature_version": "v1",
        "target": {
            "file": "prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/dsa/DSASigner.java",
            "function": "derDecode"
        },
        "id": "CVE-2016-1000338-9c489c5a",
        "deprecated": false,
        "source": "https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f",
        "digest": {
            "function_hash": "62843566931630879095861907111734894785",
            "length": 237.0
        }
    },
    {
        "signature_type": "Line",
        "signature_version": "v1",
        "target": {
            "file": "prov/src/test/java/org/bouncycastle/jce/provider/test/DSATest.java"
        },
        "id": "CVE-2016-1000338-d475fda9",
        "deprecated": false,
        "source": "https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f",
        "digest": {
            "line_hashes": [
                "27619101407773283894022340957986395790",
                "53925406762360604861398560861262849999",
                "216990679076247254168542336595971957581",
                "14297879978164554187003311429379829455",
                "11867573160650489211141619707597149843",
                "207007376803811096500197258371319649111",
                "312819499243767890488137211355596467932"
            ],
            "threshold": 0.9
        }
    }
]

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-1000338.json"