[IT-SecNots] [SECURITY] [DSA 4243-1] cups security update

[Luciano Bello <luciano AT debian.org>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

- -------------------------------------------------------------------------
Debian Security Advisory DSA-4243-1                   security AT debian.org
https://www.debian.org/security/                            Luciano Bello
July 11, 2018                         https://www.debian.org/security/faq
- -------------------------------------------------------------------------

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 AT lists.debian.org
-----BEGIN PGP SIGNATURE-----
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=g0fa
-----END PGP SIGNATURE-----