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AUSCERT External Security Bulletin Redistribution
ESB-2020.3179
USN-4508-1: StoreBackup vulnerability
17 September 2020
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AusCERT Security Bulletin Summary
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Product: StoreBackup
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-7040
Reference: ESB-2020.0434
Original Bulletin:
https://usn.ubuntu.com/4508-1/
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USN-4508-1: StoreBackup vulnerability
16 September 2020
StoreBackup could be made to stop executing or generate a race condition
if it received a lock file in the default location.
Releases
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Packages
o 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
o storebackup - 3.2.1-1+deb8u1build0.20.04.1
Ubuntu 18.04
o storebackup - 3.2.1-1+deb8u1build0.18.04.1
Ubuntu 16.04
o storebackup - 3.2.1-1+deb8u1build0.16.04.1
In general, a standard system update will make all the necessary changes.
References
o CVE-2020-7040
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