critical
9.8
CWE
119 190 787
Advisory Published
CVE Published
Updated

CVE-2018-18311: Buffer Overflow

First published: Mon Nov 05 2018(Updated: )

A flaw was found in Perl versions 5.8.0 through 5.28. An Integer overflow leading to buffer overflow in Perl_my_setenv function in util.c Upstream Patch: <a href="https://github.com/Perl/perl5/commit/34716e2a6ee2af96078d62b065b7785c001194be">https://github.com/Perl/perl5/commit/34716e2a6ee2af96078d62b065b7785c001194be</a>

Credit: Jakub Wilk Jayakrishna Menon Eiichi Tsukata cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Apple macOS Mojave<10.14.4
10.14.4
Apple High Sierra
Apple Sierra
redhat/perl<5.29.1
5.29.1
redhat/perl<5.26.3
5.26.3
Perl Perl<5.26.3
Perl Perl>=5.28.0<5.28.1
Canonical Ubuntu Linux=12.04
Canonical Ubuntu Linux=14.04
Canonical Ubuntu Linux=16.04
Canonical Ubuntu Linux=18.04
Canonical Ubuntu Linux=18.10
Debian Debian Linux=8.0
Debian Debian Linux=9.0
NetApp E-Series SANtricity OS Controller
NetApp Snap Creator Framework
Netapp Snapcenter
Netapp Snapdriver
Redhat Openshift Container Platform=3.11
Redhat Enterprise Linux=6.0
Redhat Enterprise Linux=7.0
Redhat Enterprise Linux=7.4
Redhat Enterprise Linux=7.5
Redhat Enterprise Linux=7.6
Redhat Enterprise Linux Desktop=7.0
Redhat Enterprise Linux Eus=7.6
Redhat Enterprise Linux Server=7.0
Redhat Enterprise Linux Server Aus=7.6
Redhat Enterprise Linux Server Tus=7.6
Redhat Enterprise Linux Workstation=7.0
Apple Mac OS X<10.14.4
Fedoraproject Fedora=29
McAfee Web Gateway>=7.7.2<7.7.2.21
McAfee Web Gateway>=7.8.2<7.8.2.8
McAfee Web Gateway>=8.0.0<8.1.1
debian/perl
5.32.1-4+deb11u3
5.32.1-4+deb11u4
5.36.0-7+deb12u1
5.40.0-7

Remedy

https://bugzilla.redhat.com/show_bug.cgi?id=1646730

Remedy

https://github.com/Perl/perl5/commit/34716e2a6ee2af96078d62b065b7785c001194be

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is the severity of CVE-2018-18311?

    The severity of CVE-2018-18311 is critical with a severity value of 9.8.

  • What is affected by CVE-2018-18311?

    Perl versions before 5.26.3 and 5.28.x before 5.28.1 are affected. Some Ubuntu, Debian, Red Hat, Apple macOS, and other products are also affected.

  • How does CVE-2018-18311 work?

    CVE-2018-18311 is a buffer overflow vulnerability that can be triggered by a crafted regular expression, leading to invalid write operations.

  • How can I fix CVE-2018-18311?

    Update Perl to version 5.26.3 or apply the relevant security patches provided by your Linux distribution or vendor.

  • Where can I find more information about CVE-2018-18311?

    You can find more information about CVE-2018-18311 at the following references: [seclists.org](http://seclists.org/fulldisclosure/2019/Mar/49), [securityfocus.com](http://www.securityfocus.com/bid/106145), [securitytracker.com](http://www.securitytracker.com/id/1042181).

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