Home / vulnerabilities Secunia Security Advisory 47296
Posted on 24 December 2011
Source : packetstormsecurity.org Link
----------------------------------------------------------------------
Secunia is hiring!
Find your next job here:
http://secunia.com/company/jobs/
----------------------------------------------------------------------
TITLE:
Linux Kernel "SG_IO" SCSI IOCTL Privilege Escalation Vulnerability
SECUNIA ADVISORY ID:
SA47296
VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47296/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47296
RELEASE DATE:
2011-12-23
DISCUSS ADVISORY:
http://secunia.com/advisories/47296/#comments
AVAILABLE ON SITE AND IN CUSTOMER AREA:
* Last Update
* Popularity
* Comments
* Criticality Level
* Impact
* Where
* Solution Status
* Operating System / Software
* CVE Reference(s)
http://secunia.com/advisories/47296/
ONLY AVAILABLE IN CUSTOMER AREA:
* Authentication Level
* Report Reliability
* Secunia PoC
* Secunia Analysis
* Systems Affected
* Approve Distribution
* Remediation Status
* Secunia CVSS Score
* CVSS
https://ca.secunia.com/?page=viewadvisory&vuln_id=47296
ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
* AUTOMATED SCANNING
http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/
DESCRIPTION:
A vulnerability has been reported in the Linux Kernel, which can be
exploited by malicious, local users and malicious, local users in a
guest virtual machine to gain escalated privileges.
The vulnerability is caused due to SG_IO SCSI IOCTL commands being
passed down to the block device without properly honoring access
restrictions to e.g. single partitions or LVM volumes. This can e.g.
be exploited by a privileged guest user in certain virtualisation
setups to read from or write to the host's block device.
SOLUTION:
Restrict access to trusted users only.
PROVIDED AND/OR DISCOVERED BY:
Paolo Bonzini, Red Hat
ORIGINAL ADVISORY:
Paolo Bonzini:
https://lkml.org/lkml/2011/12/22/270
Red Hat bug #752375:
https://bugzilla.redhat.com/show_bug.cgi?id=752375
OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/
----------------------------------------------------------------------
About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.
Subscribe:
http://secunia.com/advisories/secunia_security_advisories/
Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/
Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.
----------------------------------------------------------------------
