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AUSCERT External Security Bulletin Redistribution
OpenStack Nova vulnerabilities
12 October 2017
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Access Privileged Data -- Existing Account
Denial of Service -- Existing Account
Unauthorised Access -- Existing Account
CVE Names: CVE-2016-2140 CVE-2015-8749 CVE-2015-7713
CVE-2015-7548 CVE-2015-5162 CVE-2015-3280
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Ubuntu Security Notice USN-3449-1
October 11, 2017
A security issue affects these releases of Ubuntu and its derivatives:
- - Ubuntu 14.04 LTS
Several security issues were fixed in OpenStack Nova.
- - nova: OpenStack Compute cloud infrastructure
George Shuklin discovered that OpenStack Nova incorrectly handled the
migration process. A remote authenticated user could use this issue to
consume resources, resulting in a denial of service. (CVE-2015-3241)
George Shuklin and Tushar Patil discovered that OpenStack Nova incorrectly
handled deleting instances. A remote authenticated user could use this
issue to consume disk resources, resulting in a denial of service.
It was discovered that OpenStack Nova incorrectly limited qemu-img calls. A
remote authenticated user could use this issue to consume resources,
resulting in a denial of service. (CVE-2015-5162)
Matthew Booth discovered that OpenStack Nova incorrectly handled snapshots.
A remote authenticated user could use this issue to read arbitrary files.
Sreekumar S. and Suntao discovered that OpenStack Nova incorrectly applied
security group changes. A remote attacker could possibly use this issue to
bypass intended restriction changes by leveraging an instance that was
running when the change was made. (CVE-2015-7713)
Matt Riedemann discovered that OpenStack Nova incorrectly handled logging.
A local attacker could possibly use this issue to obtain sensitive
information from log files. (CVE-2015-8749)
Matthew Booth discovered that OpenStack Nova incorrectly handled certain
qcow2 headers. A remote authenticated user could possibly use this issue to
read arbitrary files. (CVE-2016-2140)
The problem can be corrected by updating your system to the following
Ubuntu 14.04 LTS:
In general, a standard system update will make all the necessary changes.
CVE-2015-3241, CVE-2015-3280, CVE-2015-5162, CVE-2015-7548,
CVE-2015-7713, CVE-2015-8749, CVE-2016-2140
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