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    CVE-2016-1000342

    In the Bouncy Castle JCE Provider version 1.55 and earlier ECDSA 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.

    Published:Jun 4, 2018
    Last Modified:May 12, 2025
    EPS:Jun 4, 2018
    EPSS Score:0.00341
    CVSS Score:7.5

    Affected Products

    Vendor
    Bouncycastle
    Product
    Bc-java
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Redhat
    Product
    Jboss Fuse
    Vendor
    Redhat
    Product
    Satellite
    Vendor
    Redhat
    Product
    Satellite Capsule

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-13506 (CVSS 8.7) — In Bouncy Castle for Java before 1.85, Lazy ASN.1 sequence forcing resets nesting-depth guard. This issue also…
    CVE-2026-12860 (CVSS 8.7) — In Bouncy Castle for Java before 1.85, RSA PKCS#1 verification skips last two hash bytes in NULL-omitted path.…
    CVE-2026-12852 (CVSS 8.7) — In Bouncy Castle for Java before 1.85, MLS wire decoder allocates attacker-declared opaque length before bound…
    CVE-2026-12817 (CVSS 8.7) — In Bouncy Castle for Java before 1.85, OpenPGP AEAD decryption skips final tag on chunk-aligned data. This iss…
    CVE-2026-12816 (CVSS 8.7) — In Bouncy Castle for Java before 1.85, IESEngine stream-mode MAC forgery via length-dependent KDF split. This …
    CVE-2026-12803 (CVSS 8.7) — In Bouncy Castle for Java before 1.85, KCCMBlockCipher MAC does not bind nonce when AAD is absent (cross-nonce…
    CVE-2026-12802 (CVSS 8.7) — In Bouncy Castle for Java before 1.85, CMS AuthEnvelopedData fails to enforce tag-length on decryption. This i…
    CVE-2026-14682 (CVSS 8.7) — In Bouncy Castle for Java before 1.85, Possible OOM from unbounded up-front allocation on a definite-length re…
    CVE-2026-58059 (CVSS 8.7) — In Bouncy Castle for Java before 1.85, Quadratic-time escaping when stringifying X.500 distinguished names. Th…

    References

    https://access.redhat.com/errata/RHSA-2018:2669
    https://access.redhat.com/errata/RHSA-2018:2927
    https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647#diff-25c3c78db788365f36839b3f2d3016b9
    https://lists.debian.org/debian-lts-announce/2018/07/msg00009.html
    https://security.netapp.com/advisory/ntap-20181127-0004/
    https://usn.ubuntu.com/3727-1/
    https://www.oracle.com/security-alerts/cpuoct2020.html
    https://access.redhat.com/errata/RHSA-2018:2669
    https://access.redhat.com/errata/RHSA-2018:2927
    https://github.com/bcgit/bc-java/commit/843c2e60f67d71faf81d236f448ebbe56c62c647#diff-25c3c78db788365f36839b3f2d3016b9
    https://lists.debian.org/debian-lts-announce/2018/07/msg00009.html
    https://security.netapp.com/advisory/ntap-20181127-0004/
    https://usn.ubuntu.com/3727-1/
    https://www.oracle.com/security-alerts/cpuoct2020.html

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High