Xen 4.11.x P2M Lock 7pk error

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Xen 4.11.x. The affected element is an unknown function of the component P2M Lock Handler. The manipulation results in 7pk error. This vulnerability is identified as CVE-2018-19964. The attack is only possible with local access. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Xen 4.11.x (Virtualization Software). It has been classified as problematic. Affected is an unknown functionality of the component P2M Lock Handler. The manipulation with an unknown input leads to a 7pk error vulnerability. CWE is classifying the issue as CWE-388. This is going to have an impact on availability. CVE summarizes:

An issue was discovered in Xen 4.11.x allowing x86 guest OS users to cause a denial of service (host OS hang) because the p2m lock remains unavailable indefinitely in certain error conditions.

The bug was discovered 11/20/2018. The weakness was released 12/08/2018 by Security Team (Matt) (Website). The advisory is shared for download at securityfocus.com. This vulnerability is traded as CVE-2018-19964 since 12/07/2018. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 119658 (Xen Project Guest p2m Page Removal Error Handling DoS (XSA-277)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171795 (SUSE Enterprise Linux Security Update for xen (SUSE-SU-2019:0003-1)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119658) and SecurityFocus (BID 106182†). Entries connected to this vulnerability are available at VDB-107985, VDB-123007, VDB-127713 and VDB-127714. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 3.8
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: 7pk error
CWE: CWE-388
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: 119658
Nessus Name: Xen Project Guest p2m Page Removal Error Handling DoS (XSA-277)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/20/2018 🔍
11/20/2018 +0 days 🔍
12/07/2018 +17 days 🔍
12/07/2018 +0 days 🔍
12/07/2018 +0 days 🔍
12/08/2018 +1 days 🔍
12/08/2018 +0 days 🔍
12/13/2018 +5 days 🔍
04/19/2020 +493 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Security Team (Matt)
Status: Confirmed

CVE: CVE-2018-19964 (🔍)
GCVE (CVE): GCVE-0-2018-19964
GCVE (VulDB): GCVE-100-127716
SecurityFocus: 106182 - Xen Multiple Privilege Escalation and Denial of Service Vulnerabilities

See also: 🔍

Entryinfo

Created: 12/08/2018 13:39
Updated: 04/19/2020 09:19
Changes: 12/08/2018 13:39 (67), 04/19/2020 09:19 (7)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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