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CVE-2018-18313: Perl: Information disclosure

CVE-2018-18313 is rated critical with a CVSS v3.0 base score of 9.1 and affects Perl, along with 8 other products in NVD’s configuration data. Per its scoring, it can be exploited over the network, without authentication, without any user interaction.

Vulnerability description

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

Severity breakdown

CVSS v3.0 9.1: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
Attack complexity: Low. No special conditions; the attack can be repeated reliably.
Privileges required: None. No account or prior access is needed.
User interaction: None. No action from any user is needed.
Scope: Unchanged. Impact stays within the vulnerable component.
Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
Integrity impact: None. No loss of integrity.
Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-125: Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

Affected products

Perl: before 5.26.3
Canonical Ubuntu Linux: 12.04; 14.04; 16.04; 18.04; 18.10
Debian Linux: 9.0
Red Hat Enterprise Linux: 6.0; 7.0; 7.4; 7.5; 7.6
Netapp E Series Santricity OS Controller: from 11.0 up to and including 11.40
Netapp Snap Creator Framework: all versions listed by NVD
Netapp Snapcenter: all versions listed by NVD
Netapp Snapdrive: all versions listed by NVD
Apple Mac OS X: before 10.14.4