What is CVE-2018-18312?

CVE-2018-18312 is a critical-severity software vulnerability (Memory corruption) with a CVSS score of 9.8. Perl before 5.26.3 and 5.28.0 before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.

Is CVE-2018-18312 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 12%.

What products does CVE-2018-18312 affect?

Tracked products affected include Perl. Check the version you run to see whether it is affected.

How do I fix CVE-2018-18312?

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

← All products

CVE-2018-18312

CRITICAL severity · CVSS 9.8 · Memory corruption

9.8CVSS CRITICAL

Summary

Perl before 5.26.3 and 5.28.0 before 5.28.1 has a buffer overflow via a crafted regular expression that triggers invalid write operations.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)12%

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products we track (1)

Perl

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
http://www.securityfocus.com/bid/106179Advisory
http://www.securitytracker.com/id/1042181Advisory
https://access.redhat.com/errata/RHSA-2019:0001Advisory
https://access.redhat.com/errata/RHSA-2019:0010Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1646734Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RWQGEB543QN7SSBRKYJM6PSOC3RLYGSM/
https://metacpan.org/changes/release/SHAY/perl-5.26.3Advisory
https://metacpan.org/changes/release/SHAY/perl-5.28.1Advisory