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USN-2922-1: Samba vulnerabilities

8 March 2016

Several security issues were fixed in Samba.

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Releases

Packages

  • samba - SMB/CIFS file, print, and login server for Unix

Details

Jeremy Allison discovered that Samba incorrectly handled ACLs on symlink
paths. A remote attacker could use this issue to overwrite the ownership of
ACLs using symlinks. (CVE-2015-7560)

Garming Sam and Douglas Bagnall discovered that the Samba internal DNS
server incorrectly handled certain DNS TXT records. A remote attacker could
use this issue to cause Samba to crash, resulting in a denial of service,
or possibly obtain uninitialized memory contents. This issue only applied
to Ubuntu 14.04 LTS and Ubuntu 15.10. (CVE-2016-0771)

It was discovered that the Samba Web Administration Tool (SWAT) was
vulnerable to clickjacking and cross-site request forgery attacks. This
issue only affected Ubuntu 12.04 LTS. (CVE-2013-0213, CVE-2013-0214)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 15.10
Ubuntu 14.04
Ubuntu 12.04

In general, a standard system update will make all the necessary changes.