Ubuntu Security Notice USN-2922-1
8th March, 2016
samba vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 15.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary
Several security issues were fixed in Samba.
Software description
- 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)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 15.10:
-
samba
2:4.1.17+dfsg-4ubuntu3.3
- Ubuntu 14.04 LTS:
-
samba
2:4.1.6+dfsg-1ubuntu2.14.04.13
- Ubuntu 12.04 LTS:
-
swat
2:3.6.3-2ubuntu2.17
-
samba
2:3.6.3-2ubuntu2.17
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.