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Ubuntu: 4121-1 Moderate: Samba Unintended File Access Threat

ubuntu
Calendar Grey September 3, 2019
Dist Ubuntu Esm H88
A Samba security flaw exposes unauthorized file access across the network in Ubuntu systems. Discover details regarding the resolution and the associated security notice.
Samba would allow unintended access to files over the network.

Summary

Samba would allow unintended access to files over the network.

Software Description:

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

Details:

Stefan Metzmacher discovered that the Samba SMB server did not properly

prevent clients from escaping outside the share root directory in

some situations. An attacker could use this to gain access to files

outside of the Samba share, where allowed by the permissions of the

underlying filesystem.

Topics%20covered

Topics Covered

security advisory unauthorized access security issue samba ubuntu file sharing

Update Instructions

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

Ubuntu 19.04:
  samba                           2:4.10.0+dfsg-0ubuntu2.4

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

References

https://ubuntu.com/security/notices/USN-4121-1

CVE-2019-10197

Severity
important
Lowest
Low
Medium
High
Critical

September 03, 2019

Topics%20covered

Topics Covered

security advisory unauthorized access security issue samba ubuntu file sharing

Package Information

https://launchpad.net/ubuntu/+source/samba/2:4.10.0+dfsg-0ubuntu2.4

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