Debian DSA-4243-1 : cups - security update

High Nessus Plugin ID 111014


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


Several vulnerabilities were discovered in CUPS, the Common UNIX Printing System. These issues have been identified with the following CVE ids :

- CVE-2017-15400 Rory McNamara discovered that an attacker is able to execute arbitrary commands (with the privilege of the CUPS daemon) by setting a malicious IPP server with a crafted PPD file.

- CVE-2018-4180 Dan Bastone of Gotham Digital Science discovered that a local attacker with access to cupsctl could escalate privileges by setting an environment variable.

- CVE-2018-4181 Eric Rafaloff and John Dunlap of Gotham Digital Science discovered that a local attacker can perform limited reads of arbitrary files as root by manipulating cupsd.conf.

- CVE-2018-6553 Dan Bastone of Gotham Digital Science discovered that an attacker can bypass the AppArmor cupsd sandbox by invoking the dnssd backend using an alternate name that has been hard linked to dnssd.


Upgrade the cups packages.

For the stable distribution (stretch), these problems have been fixed in version 2.2.1-8+deb9u2.

See Also

Plugin Details

Severity: High

ID: 111014

File Name: debian_DSA-4243.nasl

Version: 1.6

Type: local

Agent: unix

Published: 2018/07/12

Updated: 2018/11/13

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS v3.0

Base Score: 8.8

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

Vulnerability Information

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

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

Patch Publication Date: 2018/07/11

Reference Information

CVE: CVE-2017-15400, CVE-2018-4180, CVE-2018-4181, CVE-2018-6553

DSA: 4243