Debian DSA-4172-1 : perl - security update

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

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

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.

Solution

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

https://security-tracker.debian.org/tracker/CVE-2018-6797

https://security-tracker.debian.org/tracker/CVE-2018-6798

https://security-tracker.debian.org/tracker/CVE-2018-6913

https://security-tracker.debian.org/tracker/CVE-2018-6913

https://security-tracker.debian.org/tracker/source-package/perl

https://packages.debian.org/source/jessie/perl

https://packages.debian.org/source/stretch/perl

https://www.debian.org/security/2018/dsa-4172

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

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

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

CVSS v3

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