Vulnerability Monitor

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CVE-2018-18313

Perl before 5.26.3 has a buffer over-read via a crafted regular expression that triggers disclosure of sensitive information from process memory.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.1, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), and availability (service disruption) for affected systems. Impacting 9 products from perl, from canonical, from debian and 6 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-12-07T21:29:00.717

Last Modified

2024-11-21T03:55:41.177

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 9.1 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

4.9

Weaknesses

Type: Primary
CWE-125

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	perl	perl	< 5.26.3	Yes
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes
Operating System	canonical	ubuntu_linux	18.10	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	redhat	enterprise_linux	6.0	Yes
Operating System	redhat	enterprise_linux	7.0	Yes
Operating System	redhat	enterprise_linux	7.4	Yes
Operating System	redhat	enterprise_linux	7.5	Yes
Operating System	redhat	enterprise_linux	7.6	Yes
Application	netapp	e-series_santricity_os_controller	≤ 11.40	Yes
Application	netapp	snap_creator_framework	-	Yes
Application	netapp	snapcenter	-	Yes
Application	netapp	snapdrive	-	Yes
Operating System	apple	mac_os_x	< 10.14.4	Yes

References

http://seclists.org/fulldisclosure/2019/Mar/49 Third Party Advisory ([email protected])
http://www.securitytracker.com/id/1042181 Third Party Advisory, VDB Entry ([email protected])
https://access.redhat.com/errata/RHSA-2019:0001 Third Party Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2019:0010 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=1646738 Issue Tracking, Patch, Third Party Advisory ([email protected])
https://github.com/Perl/perl5/commit/43b2f4ef399e2fd7240b4eeb0658686ad95f8e62 Patch, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWQGEB543QN7SSBRKYJM6PSOC3RLYGSM/ ([email protected])
https://metacpan.org/changes/release/SHAY/perl-5.26.3 Third Party Advisory ([email protected])
https://rt.perl.org/Ticket/Display.html?id=133192 Exploit, Third Party Advisory ([email protected])
https://seclists.org/bugtraq/2019/Mar/42 Mailing List, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/201909-01 ([email protected])
https://security.netapp.com/advisory/ntap-20190221-0003/ Third Party Advisory ([email protected])
https://support.apple.com/kb/HT209600 Third Party Advisory ([email protected])
https://usn.ubuntu.com/3834-1/ Third Party Advisory ([email protected])
https://usn.ubuntu.com/3834-2/ Third Party Advisory ([email protected])
https://www.debian.org/security/2018/dsa-4347 Third Party Advisory ([email protected])
https://www.oracle.com/security-alerts/cpujul2020.html ([email protected])
http://seclists.org/fulldisclosure/2019/Mar/49 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1042181 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2019:0001 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2019:0010 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=1646738 Issue Tracking, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/Perl/perl5/commit/43b2f4ef399e2fd7240b4eeb0658686ad95f8e62 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWQGEB543QN7SSBRKYJM6PSOC3RLYGSM/ (af854a3a-2127-422b-91ae-364da2661108)
https://metacpan.org/changes/release/SHAY/perl-5.26.3 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://rt.perl.org/Ticket/Display.html?id=133192 Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://seclists.org/bugtraq/2019/Mar/42 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201909-01 (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20190221-0003/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.apple.com/kb/HT209600 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/3834-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/3834-2/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2018/dsa-4347 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpujul2020.html (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For perl's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.