UBUNTU-CVE-2017-8779

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    UBUNTU-CVE-2017-8779

    Published: 4 May 2017Last Modified: 22 Apr 2026
    Upstream:
    CVE-2017-8779
    Aliases:
    USN-3759-1
    USN-3759-2
    USN-4986-1

    Summary:

    Details: rpcbind through 0.2.4, LIBTIRPC through 1.0.1 and 1.0.2-rc through 1.0.2-rc3, and NTIRPC through 1.4.3 do not consider the maximum RPC data size during memory allocation for XDR strings, which allows remote attackers to cause a denial of service (memory consumption with no subsequent free) via a crafted UDP packet to port 111, aka rpcbomb.

    References: https://ubuntu.com/security/CVE-2017-8779, http://www.openwall.com/lists/oss-security/2017/05/04/1, https://github.com/guidovranken/rpcbomb/, http://openwall.com/lists/oss-security/2017/05/03/12, http://openwall.com/lists/oss-security/2017/05/04/1, https://guidovranken.wordpress.com/2017/05/03/rpcbomb-remote-rpcbind-denial-of-service-patches/, https://ubuntu.com/security/notices/USN-3759-1, https://ubuntu.com/security/notices/USN-3759-2, https://ubuntu.com/security/notices/USN-4986-1, https://ubuntu.com/security/notices/USN-4986-2, https://www.cve.org/CVERecord?id=CVE-2017-8779

    Affected packages

    Package

    Name: libtirpc

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0.2.2-5ubuntu2.1

    Affected versions

    0.2.2-5ubuntu1
    0.2.2-5ubuntu2

    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