CVE-2018-1061

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    CVE-2018-1061

    Published: 19 Jun 2018Last Modified: 7 Aug 2026

    Summary:

    Details: python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in the difflib.IS_LINE_JUNK method. An attacker could use this flaw to cause denial of service.

    References: http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46PVWY5LFP4BRPG3BVQ5QEEFYBVEXHCK/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AEZ5IQT7OF7Q2NCGIVABOWYGKO7YU3NJ/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSKPGPZQNTAULHW4UH63KGOOUIDE4RRB/, https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03951en_us, http://www.securitytracker.com/id/1042001, https://access.redhat.com/errata/RHBA-2019:0327, https://access.redhat.com/errata/RHSA-2018:3041, https://access.redhat.com/errata/RHSA-2018:3505, https://access.redhat.com/errata/RHSA-2019:1260, https://access.redhat.com/errata/RHSA-2019:3725, https://bugs.python.org/issue32981, https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-6-release-candidate-1, https://docs.python.org/3.6/whatsnew/changelog.html#python-3-6-5-release-candidate-1, https://lists.debian.org/debian-lts-announce/2018/09/msg00030.html, https://lists.debian.org/debian-lts-announce/2018/09/msg00031.html, https://usn.ubuntu.com/3817-1/, https://usn.ubuntu.com/3817-2/, https://www.debian.org/security/2018/dsa-4306, https://www.debian.org/security/2018/dsa-4307, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1061

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -ca079a3ea30098aff3197c559a0e32d42dda6d84

    Affected versions

    3.7.0-rc1

    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