Qemu up to 0.12.0 os-posix.c change_process_uid access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Qemu up to 0.12.0. This impacts the function change_process_uid of the file os-posix.c. Executing a manipulation can lead to access control. This vulnerability appears as CVE-2011-2527. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic was found in Qemu up to 0.12.0 (Virtualization Software). This vulnerability affects the function change_process_uid of the file os-posix.c. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality. CVE summarizes:

The change_process_uid function in os-posix.c in Qemu 0.14.0 and earlier does not properly drop group privileges when the -runas option is used, which allows local guest users to access restricted files on the host.

The weakness was presented 06/21/2012 by Andrew Griffiths (Website). The advisory is shared for download at bugs.launchpad.net. This vulnerability was named CVE-2011-2527 since 06/15/2011. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 01/12/2025). The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 75889 (openSUSE Security Update : kvm (openSUSE-SU-2012:0207-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 119807 (Red Hat Update for qemu-kvm (RHSA-2011:1531)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (68539), Tenable (75889), SecurityFocus (BID 48659†), OSVDB (74752†) and Secunia (SA45187†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.0
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 75889
Nessus Name: openSUSE Security Update : kvm (openSUSE-SU-2012:0207-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 70056
OpenVAS Name: Debian Security Advisory DSA 2282-1 (qemu-kvm)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/15/2011 🔍
07/06/2011 +21 days 🔍
07/12/2011 +6 days 🔍
07/12/2011 +0 days 🔍
08/02/2011 +21 days 🔍
06/21/2012 +324 days 🔍
06/21/2012 +0 days 🔍
06/13/2014 +722 days 🔍
03/23/2015 +283 days 🔍
01/12/2025 +3583 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: usn-1177-1
Researcher: Andrew Griffiths
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-2527 (🔍)
GCVE (CVE): GCVE-0-2011-2527
GCVE (VulDB): GCVE-100-61048

OVAL: 🔍

X-Force: 68539
SecurityFocus: 48659 - QEMU '-runas' Argument Local Security Bypass Vulnerability
Secunia: 45187 - Qemu Multiple Vulnerabilities, Less Critical
OSVDB: 74752
Vulnerability Center: 32519 - QEMU 0.10.6 and earlier Local Security Bypass Vulnerability, Medium

Entryinfo

Created: 03/23/2015 16:50
Updated: 01/12/2025 01:41
Changes: 03/23/2015 16:50 (62), 03/29/2017 09:17 (14), 12/05/2021 06:44 (3), 12/05/2021 06:55 (1), 12/05/2021 07:08 (1), 01/12/2025 01:41 (16)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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