Oracle Solaris 10/11 Kernel memory corruption

CVSS Meta Temp Score
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7.6$0-$5k0.00

A vulnerability was found in Oracle Solaris 10/11 (Operating System). It has been declared as critical. This vulnerability affects an unknown code of the component Kernel. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix XenServer 6.0.2 and earlier and other products; Oracle Solaris 11 and earlier; illumos before r13724; Joyent SmartOS before 20120614T184600Z; FreeBSD before 9.0-RELEASE-p3; NetBSD 6.0 Beta and earlier; Microsoft Windows Server 2008 R2 and R2 SP1 and Windows 7 Gold and SP1; and possibly other operating systems, when running on an Intel processor, incorrectly uses the sysret path in cases where a certain address is not a canonical address, which allows local users to gain privileges via a crafted application. NOTE: because this issue is due to incorrect use of the Intel specification, it should have been split into separate identifiers; however, there was some value in preserving the original mapping of the multi-codebase coordinated-disclosure effort to a single identifier.

The bug was discovered 06/12/2012. The weakness was released 10/16/2012 by Rafal Wojtczuk with SuSE as cpuoct2012-1515893 as not defined advisory (Website). The advisory is available at oracle.com. The public release was coordinated with the vendor. This vulnerability was named CVE-2012-0217 since 12/14/2011. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in ANSI C. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 74682 (openSUSE Security Update : xen (openSUSE-SU-2012:0886-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370050 (Citrix XenServer Security Update (CTX133161)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (74682) and Exploit-DB (28718). Additional details are provided at darkreading.com. Entries connected to this vulnerability are available at 5523, 5525, 5555 and 5556.

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CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 7.6

VulDB Base Score: 8.4
VulDB Temp Score: 7.6
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

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Access: Public
Status: Proof-of-Concept
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Nessus ID: 74682
Nessus Name: openSUSE Security Update : xen (openSUSE-SU-2012:0886-1)
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OpenVAS ID: 71479
OpenVAS Name: Debian Security Advisory DSA 2501-1 (xen)
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Countermeasuresinfo

Recommended: Patch
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Timelineinfo

12/14/2011 🔍
06/12/2012 +181 days 🔍
06/12/2012 +0 days 🔍
06/12/2012 +0 days 🔍
10/16/2012 +125 days 🔍
10/16/2012 +0 days 🔍
10/18/2012 +2 days 🔍
06/13/2014 +603 days 🔍
07/30/2019 +1873 days 🔍

Sourcesinfo

Vendor: oracle.com

Advisory: cpuoct2012-1515893
Researcher: Rafal Wojtczuk
Organization: SuSE
Status: Not defined
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CVE: CVE-2012-0217 (🔍)
OVAL: 🔍

SecurityFocus: 53856 - Intel CPU Hardware Local Privilege Escalation Vulnerability
Secunia: 55082
OSVDB: 82949 - Microsoft Windows User Mode Scheduler privilege escalation

scip Labs: https://www.scip.ch/en/?labs.20161013
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Entryinfo

Created: 10/18/2012 10:00
Updated: 07/30/2019 20:54
Changes: 10/18/2012 10:00 (85), 07/30/2019 20:54 (5)
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