UBUNTU-CVE-2016-4537

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    UBUNTU-CVE-2016-4537

    Published: 6 May 2016Last Modified: 22 Apr 2026
    Upstream:
    CVE-2016-4537
    Aliases:
    USN-2984-1

    Summary:

    Details: The bcpowmod function in ext/bcmath/bcmath.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 accepts a negative integer for the scale argument, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted call.

    References: https://ubuntu.com/security/CVE-2016-4537, http://www.openwall.com/lists/oss-security/2016/05/05/21, https://ubuntu.com/security/notices/USN-2984-1, https://www.cve.org/CVERecord?id=CVE-2016-4537

    Affected packages

    Package

    Name: php5

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-1ubuntu4.17?arch=source&distro=trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.5.9+dfsg-1ubuntu4.17

    Affected versions

    5.5.3+dfsg-1ubuntu2
    5.5.3+dfsg-1ubuntu3
    5.5.6+dfsg-1ubuntu1
    5.5.6+dfsg-1ubuntu2
    5.5.8+dfsg-2ubuntu1
    5.5.9+dfsg-1ubuntu1
    5.5.9+dfsg-1ubuntu2
    5.5.9+dfsg-1ubuntu3
    5.5.9+dfsg-1ubuntu4
    5.5.9+dfsg-1ubuntu4.1
    5.5.9+dfsg-1ubuntu4.2
    5.5.9+dfsg-1ubuntu4.3
    5.5.9+dfsg-1ubuntu4.4
    5.5.9+dfsg-1ubuntu4.5
    5.5.9+dfsg-1ubuntu4.6
    5.5.9+dfsg-1ubuntu4.7
    5.5.9+dfsg-1ubuntu4.9
    5.5.9+dfsg-1ubuntu4.11
    5.5.9+dfsg-1ubuntu4.12
    5.5.9+dfsg-1ubuntu4.13
    5.5.9+dfsg-1ubuntu4.14
    5.5.9+dfsg-1ubuntu4.16

    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
    UBUNTU-CVE-2016-4537 | CVE-DB