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Ubuntu Security Notice USN-4508-1

Ubuntu Security Notice USN-4508-1
Posted Sep 16, 2020
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4508-1 - It was discovered that StoreBackup did not properly manage lock files. A local attacker could use this issue to cause a denial of service or escalate privileges and run arbitrary code.

tags | advisory, denial of service, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2020-7040
MD5 | 3a173c8e1adaa02f65abf5fc9ae3a802

Ubuntu Security Notice USN-4508-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4508-1
September 16, 2020

storebackup vulnerability
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

StoreBackup could be made to stop executing or generate a race condition
if it received a lock file in the default location.

Software Description:
- storebackup: fancy compressing managing checksumming deduplicating
hard-linkin

Details:

It was discovered that StoreBackup did not properly manage lock files. A
local attacker could use this issue to cause a denial of service or
escalate privileges and run arbitrary code. (CVE-2020-7040)

Update instructions:

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

Ubuntu 20.04 LTS:
storebackup 3.2.1-1+deb8u1build0.20.04.1

Ubuntu 18.04 LTS:
storebackup 3.2.1-1+deb8u1build0.18.04.1

Ubuntu 16.04 LTS:
storebackup 3.2.1-1+deb8u1build0.16.04.1

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

References:
https://usn.ubuntu.com/4508-1
CVE-2020-7040

Package Information:

https://launchpad.net/ubuntu/+source/storebackup/3.2.1-1+deb8u1build0.20.04.1

https://launchpad.net/ubuntu/+source/storebackup/3.2.1-1+deb8u1build0.18.04.1

https://launchpad.net/ubuntu/+source/storebackup/3.2.1-1+deb8u1build0.16.04.1
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