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Ubuntu Security Notice USN-5260-2

Ubuntu Security Notice USN-5260-2
Posted Feb 1, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5260-2 - Orange Tsai discovered that the Samba vfs_fruit module incorrectly handled certain memory operations. A remote attacker could use this issue to cause Samba to crash, resulting in a denial of service, or possibly execute arbitrary code as root.

tags | advisory, remote, denial of service, arbitrary, root
systems | linux, ubuntu
advisories | CVE-2021-44142
SHA-256 | 69faabb25cfae22c65e81b78d83b23a53e6dc20c613861ebb9a20102dff021b1

Ubuntu Security Notice USN-5260-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5260-2
February 01, 2022

samba vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS

Summary:

Samba could be made to crash or run programs as an administrator if it
received specially crafted network traffic.

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

Details:

Orange Tsai discovered that the Samba vfs_fruit module incorrectly handled
certain memory operations. A remote attacker could use this issue to cause
Samba to crash, resulting in a denial of service, or possibly execute
arbitrary code as root. (CVE-2021-44142)

Update instructions:

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

Ubuntu 18.04 LTS:
samba 2:4.7.6+dfsg~ubuntu-0ubuntu2.28

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

References:
https://ubuntu.com/security/notices/USN-5260-2
https://ubuntu.com/security/notices/USN-5260-1
CVE-2021-44142

Package Information:
https://launchpad.net/ubuntu/+source/samba/2:4.7.6+dfsg~ubuntu-0ubuntu2.28
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