Linux Foundation Xen up to 4.2.2 Page Reference Counting resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Foundation Xen up to 4.2.2. It has been classified as problematic. Affected by this vulnerability is an unknown functionality of the component Page Reference Counting. Performing a manipulation results in resource management. This vulnerability was named CVE-2013-1432. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Foundation Xen up to 4.2.2 (Virtualization Software). This affects an unknown code block of the component Page Reference Counting. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

Xen 4.1.x and 4.2.x, when the XSA-45 patch is in place, does not properly maintain references on pages stored for deferred cleanup, which allows local PV guest kernels to cause a denial of service (premature page free and hypervisor crash) or possible gain privileges via unspecified vectors.

The weakness was presented 06/26/2013 by Andrew Cooper as XSA-45 as not defined mailinglist post (oss-sec). The advisory is shared at seclists.org. This vulnerability is uniquely identified as CVE-2013-1432 since 01/26/2013. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The advisory points out:

Malicious or buggy PV guest kernels can mount a denial of service attack affecting the whole system. It can't be excluded that this could also be exploited to mount a privilege escalation attack.

The vulnerability scanner Nessus provides a plugin with the ID 67327 (Fedora 17 : xen-4.1.5-9.fc17 (2013-11871)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166813 (SUSE Enterprise Linux Security Update for Xen (SUSE-SU-2014:0446-1)).

Applying the patch xsa58-4.1.patch/xsa58-4.2.patch/xsa58-unstable.patch is able to eliminate this problem. The bugfix is ready for download at seclists.org. A possible mitigation has been published immediately after the disclosure of the vulnerability. The mailinglist post contains the following remark:

Running only HVM guests, or PV guests with trusted kernels, will avoid this vulnerability.

The vulnerability is also documented in the databases at X-Force (85317), Tenable (67327), SecurityFocus (BID 60277†), OSVDB (94600†) and Secunia (SA53925†). See VDB-8812, VDB-8938, VDB-8939 and VDB-9254 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 67327
Nessus Name: Fedora 17 : xen-4.1.5-9.fc17 (2013-11871)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 866811
OpenVAS Name: Fedora Update for xen FEDORA-2013-11837
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: xsa58-4.1.patch/xsa58-4.2.patch/xsa58-unstable.patch

Timelineinfo

01/26/2013 🔍
06/26/2013 +151 days 🔍
06/26/2013 +0 days 🔍
06/26/2013 +0 days 🔍
06/27/2013 +1 days 🔍
06/27/2013 +0 days 🔍
07/12/2013 +15 days 🔍
08/28/2013 +47 days 🔍
12/15/2013 +109 days 🔍
05/17/2021 +2710 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: XSA-45
Researcher: Andrew Cooper
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-1432 (🔍)
GCVE (CVE): GCVE-0-2013-1432
GCVE (VulDB): GCVE-100-9273

OVAL: 🔍

X-Force: 85317
SecurityFocus: 60277
Secunia: 53925 - Xen Page Reference Counting Denial of Service Vulnerability, Not Critical
OSVDB: 94600
Vulnerability Center: 42574 - Xen 4.1.* and 4.2.* Local Denial of Service and Possible Privilege Escalation (CVE-2013-1432), High

See also: 🔍

Entryinfo

Created: 06/27/2013 11:49
Updated: 05/17/2021 11:38
Changes: 06/27/2013 11:49 (84), 05/17/2017 09:05 (2), 05/17/2021 11:38 (3)
Complete: 🔍
Cache ID: 216:145:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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