CVE-2017-12837

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    CVE-2017-12837

    Published: 19 Sept 2017Last Modified: 7 Aug 2026

    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://rt.perl.org/Public/Bug/Display.html?id=131582, https://www.oracle.com/security-alerts/cpujul2020.html, http://www.debian.org/security/2017/dsa-3982, http://www.securityfocus.com/bid/100860, https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1, https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1, https://security.netapp.com/advisory/ntap-20180426-0001/, https://bugzilla.redhat.com/show_bug.cgi?id=1492091, https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    5.26.0

    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