CVE-2018-16855

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    CVE-2018-16855

    Published: 3 Dec 2018Last Modified: 7 Aug 2026

    Summary:

    Details: An issue has been found in PowerDNS Recursor before version 4.1.8 where a remote attacker sending a DNS query can trigger an out-of-bounds memory read while computing the hash of the query for a packet cache lookup, possibly leading to a crash.

    References: https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-09.html, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16855

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -e412a949491886c13854587bbd06fa90ceb3a326

    Affected versions

    rec-4.1.7
    rec-4.1.6
    rec-4.1.5
    rec-4.1.4
    rec-4.1.3
    rec-4.1.2
    rec-4.1.1
    rec-4.1.0
    rec-4.1.0-rc3
    rec-4.1.0-rc2
    rec-4.1.0-rc1
    rec-4.1.0-alpha1

    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