Oracle Solaris 10/11 on 64-bit Kernel SYSRET memory corruption

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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Oracle Solaris 10/11 on 64-bit. It has been classified as problematic. This vulnerability affects the function SYSRET of the component Kernel. This manipulation causes memory corruption. This vulnerability appears as CVE-2012-0217. The attack requires local access. In addition, an exploit is available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability classified as critical was found in Oracle Solaris 10/11 on 64-bit (Operating System). Affected by this vulnerability is the function SYSRET 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. The summary by CVE is:

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 presented 06/12/2012 by Rafal Wojtczuk with Bromium & SuSE (Website). It is possible to read the advisory at oracle.com. This vulnerability is known as CVE-2012-0217 since 12/14/2011. Attacking locally is a requirement. The requirement for exploitation is a single authentication. Technical details and also a public exploit are known.

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. We expect the 0-day to have been worth approximately $5k-$25k. 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 the patch CPU October 2012 is able to eliminate this problem. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (75928), Exploit-DB (28718), Tenable (74682), SecurityFocus (BID 53856†) and OSVDB (86676†). See VDB-5523, VDB-5525, VDB-5555 and VDB-5556 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

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CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

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Nessus ID: 74682
Nessus Name: openSUSE Security Update : xen (openSUSE-SU-2012:0886-1)
Nessus File: 🔍
Nessus Risk: 🔍
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OpenVAS ID: 71479
OpenVAS Name: Debian Security Advisory DSA 2501-1 (xen)
OpenVAS File: 🔍
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Exploit-DB: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Patch: CPU October 2012

Timelineinfo

12/14/2011 🔍
06/12/2012 +181 days 🔍
06/12/2012 +0 days 🔍
06/12/2012 +0 days 🔍
06/12/2012 +0 days 🔍
06/12/2012 +0 days 🔍
06/12/2012 +0 days 🔍
06/13/2012 +1 days 🔍
07/10/2012 +27 days 🔍
10/28/2012 +110 days 🔍
10/29/2012 +1 days 🔍
06/13/2014 +592 days 🔍
01/07/2025 +3861 days 🔍

Sourcesinfo

Vendor: oracle.com

Advisory: oracle.com
Researcher: Rafal Wojtczuk
Organization: Bromium & SuSE
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-0217 (🔍)
GCVE (CVE): GCVE-0-2012-0217
GCVE (VulDB): GCVE-100-6823

OVAL: 🔍

CERT: 🔍
X-Force: 75928
SecurityFocus: 53856 - Intel CPU Hardware Local Privilege Escalation Vulnerability
Secunia: 51674
OSVDB: 86676 - Microsoft Windows User Mode Scheduler privilege escalation
SecurityTracker: 1027155
Vulnerability Center: 35304 - [MS12-042, cpuoct2012-1515893] Multiple Platform Local Privilege Escalation via a Crafted Application, High

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 10/29/2012 14:29
Updated: 01/07/2025 20:43
Changes: 10/29/2012 14:29 (89), 07/30/2019 21:02 (11), 07/15/2024 00:17 (17), 01/07/2025 20:43 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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