Debian DSA-4172-1 : perl - security update

critical Nessus Plugin ID 109047
New! Plugin Severity Now Using CVSS v3

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The remote Debian host is missing a security-related update.


Multiple vulnerabilities were discovered in the implementation of the Perl programming language. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2018-6797 Brian Carpenter reported that a crafted regular expression could cause a heap buffer write overflow, with control over the bytes written.

- CVE-2018-6798 Nguyen Duc Manh reported that matching a crafted locale dependent regular expression can cause a heap-based buffer over-read and potentially information disclosure.

- CVE-2018-6913 GwanYeong Kim reported that 'pack()' could cause a heap buffer write overflow with a large item count.


Upgrade the perl packages.

For the oldstable distribution (jessie), these problems have been fixed in version 5.20.2-3+deb8u10. The oldstable distribution (jessie) update contains only a fix for CVE-2018-6913.

For the stable distribution (stretch), these problems have been fixed in version 5.24.1-3+deb9u3.

See Also

Plugin Details

Severity: Critical

ID: 109047

File Name: debian_DSA-4172.nasl

Version: 1.6

Type: local

Agent: unix

Published: 4/16/2018

Updated: 11/13/2018

Dependencies: ssh_get_info.nasl

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 7.5

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


Risk Factor: Critical

Base Score: 9.8

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:perl, cpe:/o:debian:debian_linux:8.0, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 4/14/2018

Reference Information

CVE: CVE-2018-6797, CVE-2018-6798, CVE-2018-6913

DSA: 4172