Linux Foundation Xen 4.2.0/4.2.1/4.2.2/4.2.3/4.3.0 Pointer xenctrl_stubs.c xc_vcpu_getaffinity memory corruption

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3.2$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Foundation Xen 4.2.0/4.2.1/4.2.2/4.2.3/4.3.0. This affects the function xc_vcpu_getaffinity of the file ocaml/libs/xc/xenctrl_stubs.c of the component Pointer Handler. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2013-4370. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Foundation Xen 4.2.0/4.2.1/4.2.2/4.2.3/4.3.0 (Virtualization Software). This issue affects the function xc_vcpu_getaffinity of the file ocaml/libs/xc/xenctrl_stubs.c of the component Pointer Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

The ocaml binding for the xc_vcpu_getaffinity function in Xen 4.2.x and 4.3.x frees certain memory that may still be intended for use, which allows local users to cause a denial of service (heap corruption and crash) and possibly execute arbitrary code via unspecified vectors that trigger a (1) use-after-free or (2) double free.

The weakness was disclosed 10/10/2013 by Matthew Daley and Coverty Scan as misplaced free in ocaml xc_vcpu_getaffinity stub as not defined mailinglist post (oss-sec). It is possible to read the advisory at seclists.org. The identification of this vulnerability is CVE-2013-4370 since 06/12/2013. Attacking locally is a requirement. Required for exploitation is a simple authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 70549 (Fedora 19 : xen-4.2.3-4.fc19 (2013-19048)), 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 166560 (SUSE Enterprise Linux Security update for Xen (SUSE-SU-2013:1774-1)).

Applying the patch xsa69 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 X-Force (87796), Tenable (70549), SecurityFocus (BID 62930†), OSVDB (98289†) and Secunia (SA55239†). The entries VDB-10665, VDB-10666, VDB-10668 and VDB-10674 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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CPE 2.3info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 70549
Nessus Name: Fedora 19 : xen-4.2.3-4.fc19 (2013-19048)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 867005
OpenVAS Name: Fedora Update for xen FEDORA-2013-19048
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: xsa69

Timelineinfo

06/12/2013 🔍
10/10/2013 +119 days 🔍
10/10/2013 +0 days 🔍
10/10/2013 +0 days 🔍
10/11/2013 +1 days 🔍
10/15/2013 +4 days 🔍
10/17/2013 +2 days 🔍
10/17/2013 +0 days 🔍
10/29/2013 +12 days 🔍
05/26/2021 +2766 days 🔍

Sourcesinfo

Vendor: linuxfoundation.org

Advisory: misplaced free in ocaml xc_vcpu_getaffinity stub
Researcher: Matthew Daley, Coverty Scan
Status: Not defined

CVE: CVE-2013-4370 (🔍)
GCVE (CVE): GCVE-0-2013-4370
GCVE (VulDB): GCVE-100-10667

OVAL: 🔍

X-Force: 87796
SecurityFocus: 62930
Secunia: 55239 - Xen ocaml "xc_vcpu_getaffinity()" Use-After-Free Vulnerability, Less Critical
OSVDB: 98289
Vulnerability Center: 42121 - Xen 4.2 Through 4.3 Local Arbitrary Code Execution and DoS Vulnerability Due to a Flaw in the xc_vcpu_getaffinity Function, Medium

See also: 🔍

Entryinfo

Created: 10/15/2013 10:06
Updated: 05/26/2021 16:21
Changes: 10/15/2013 10:06 (80), 05/14/2017 09:52 (2), 05/26/2021 16:13 (4), 05/26/2021 16:21 (1)
Complete: 🔍
Committer: olku
Cache ID: 216:702:103

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