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Debian Security Advisory 4243-1

Debian Security Advisory 4243-1
Posted Jul 11, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4243-1 - Several vulnerabilities were discovered in CUPS, the Common UNIX Printing System.

tags | advisory, vulnerability
systems | linux, unix, debian
advisories | CVE-2017-15400, CVE-2018-4180, CVE-2018-4181, CVE-2018-4182, CVE-2018-4183, CVE-2018-6553
MD5 | 662c30e0c1f0bfe7c7a3d4b17ffa744c

Debian Security Advisory 4243-1

Change Mirror Download
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- -------------------------------------------------------------------------
Debian Security Advisory DSA-4243-1 security@debian.org
https://www.debian.org/security/ Luciano Bello
July 11, 2018 https://www.debian.org/security/faq
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Package : cups
CVE ID : CVE-2017-15400 CVE-2018-4180 CVE-2018-4181 CVE-2018-4182
CVE-2018-4183 CVE-2018-6553

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-2018-4182

Dan Bastone of Gotham Digital Science discovered that an attacker
with sandboxed root access can execute backends without a sandbox
profile by provoking an error in CUPS' profile creation.

CVE-2018-4183

Dan Bastone and Eric Rafaloff of Gotham Digital Science discovered
that an attacker with sandboxed root access can execute arbitrary
commands as unsandboxed root by modifying /etc/cups/cups-files.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.


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

We recommend that you upgrade your cups packages.

For the detailed security status of cups please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/cups

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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