UBUNTU-CVE-2018-9860

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    UBUNTU-CVE-2018-9860

    Published: 12 Apr 2018Last Modified: 22 Apr 2026
    Upstream:
    CVE-2018-9860

    Summary:

    Details: An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0. An off-by-one error when processing malformed TLS-CBC ciphertext could cause the receiving side to include in the HMAC computation exactly 64K bytes of data following the record buffer, aka an over-read. The MAC comparison will subsequently fail and the connection will be closed. This could be used for denial of service. No information leak occurs.

    References: https://ubuntu.com/security/CVE-2018-9860, https://github.com/randombit/botan/commit/ec222c99719c396a1f4756b2ca345dbbfbeb5ed5, https://www.cve.org/CVERecord?id=CVE-2018-9860

    Affected packages

    Package

    Name: botan1.10

    Purl: pkg:deb/ubuntu/[email protected]+deb7u1ubuntu0.14.04.1+esm1?arch=source&distro=esm-infra-legacy/trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.10.5-1
    1.10.5-1ubuntu1
    1.10.5-1+deb7u1ubuntu0.14.04.1
    1.10.5-1+deb7u1ubuntu0.14.04.1+esm1

    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