UBUNTU-CVE-2017-12837

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    UBUNTU-CVE-2017-12837

    Published: 19 Sept 2017Last Modified: 22 Apr 2026
    Upstream:
    CVE-2017-12837
    Aliases:
    USN-3478-1

    Summary:

    Details: Heap-based buffer overflow in the S_regatom function in regcomp.c in Perl 5 before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 allows remote attackers to cause a denial of service (out-of-bounds write) via a regular expression with a '\N{}' escape and the case-insensitive modifier.

    References: https://ubuntu.com/security/CVE-2017-12837, https://rt.perl.org/Public/Bug/Display.html?id=131582, https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5, https://ubuntu.com/security/notices/USN-3478-1, https://www.cve.org/CVERecord?id=CVE-2017-12837

    Affected packages

    Package

    Name: perl

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -5.18.2-2ubuntu1.3

    Affected versions

    5.14.2-21build1

    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