GHSA-r9ch-m4fh-fc7q

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    GHSA-r9ch-m4fh-fc7q

    Published: 17 Oct 2018Last Modified: 12 Sept 2025

    Summary: Moderate severity vulnerability that affects org.bouncycastle:bcprov-jdk14 and org.bouncycastle:bcprov-jdk15

    Details: In the Bouncy Castle JCE Provider version 1.55 and earlier DSA signature generation is vulnerable to timing attack. Where timings can be closely observed for the generation of signatures, the lack of blinding in 1.55, or earlier, may allow an attacker to gain information about the signature's k value and ultimately the private value as well.

    References: https://nvd.nist.gov/vuln/detail/CVE-2016-1000341, https://github.com/bcgit/bc-java/commit/acaac81f96fec91ab45bd0412beaf9c3acd8defa#diff-e75226a9ca49217a7276b29242ec59ce, https://access.redhat.com/errata/RHSA-2018:2669, https://access.redhat.com/errata/RHSA-2018:2927, https://github.com/advisories/GHSA-r9ch-m4fh-fc7q, https://github.com/bcgit/bc-java, 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

    Affected packages

    Package

    Name: org.bouncycastle:bcprov-jdk14

    Purl: pkg:maven/org.bouncycastle/bcprov-jdk14

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.56

    Affected versions

    1.38

    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
    GHSA-r9ch-m4fh-fc7q | CVE-DB