UBUNTU-CVE-2013-7040

    Dashboard / Vulnerabilities / UBUNTU-CVE-2013-7040

    UBUNTU-CVE-2013-7040

    Published: 19 May 2014Last Modified: 8 Sept 2026
    Upstream:
    CVE-2013-7040

    Summary:

    Details: Python 2.7 before 3.4 only uses the last eight bits of the prefix to randomize hash values, which causes it to compute hash values without restricting the ability to trigger hash collisions predictably and makes it easier for context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table. NOTE: this vulnerability exists because of an incomplete fix for CVE-2012-1150.

    References: https://ubuntu.com/security/CVE-2013-7040, http://www.openwall.com/lists/oss-security/2013/12/09, https://www.cve.org/CVERecord?id=CVE-2013-7040

    Affected packages

    Package

    Name: python2.7

    Purl: pkg:deb/ubuntu/python2.7?arch=source&distro=esm-infra-legacy%2Ftrusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.7.5-8ubuntu3
    2.7.5-8ubuntu4
    2.7.6-2
    2.7.6-2ubuntu1
    2.7.6-3
    2.7.6-3ubuntu1
    2.7.6-4
    2.7.6-4ubuntu1
    2.7.6-5
    2.7.6-7
    2.7.6-8
    2.7.6-8ubuntu0.2
    2.7.6-8ubuntu0.3
    2.7.6-8ubuntu0.4
    2.7.6-8ubuntu0.5
    2.7.6-8ubuntu0.6+esm2
    2.7.6-8ubuntu0.6+esm3
    2.7.6-8ubuntu0.6+esm5
    2.7.6-8ubuntu0.6+esm6
    2.7.6-8ubuntu0.6+esm7
    2.7.6-8ubuntu0.6+esm8
    2.7.6-8ubuntu0.6+esm9
    2.7.6-8ubuntu0.6+esm10
    2.7.6-8ubuntu0.6+esm11
    2.7.6-8ubuntu0.6+esm12
    2.7.6-8ubuntu0.6+esm13
    2.7.6-8ubuntu0.6+esm14
    2.7.6-8ubuntu0.6+esm15
    2.7.6-8ubuntu0.6+esm16
    2.7.6-8ubuntu0.6+esm17
    2.7.6-8ubuntu0.6+esm18
    2.7.6-8ubuntu0.6+esm20
    2.7.6-8ubuntu0.6+esm21
    2.7.6-8ubuntu0.6+esm22
    2.7.6-8ubuntu0.6+esm24
    2.7.6-8ubuntu0.6+esm25
    2.7.6-8ubuntu0.6+esm26
    2.7.6-8ubuntu0.6+esm28
    2.7.6-8ubuntu0.6+esm29
    2.7.6-8ubuntu0.6+esm30

    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-2013-7040 | CVE-DB