Linux Kernel 4.0.5 on x86 KVM Virtualization Support kvm_apic_has_events null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel 4.0.5 on x86. It has been classified as problematic. This affects the function kvm_apic_has_events of the component KVM Virtualization Support. The manipulation leads to null pointer dereference. This vulnerability is uniquely identified as CVE-2015-4692. There is no exploit available. It is recommended to upgrade the affected component. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Detailsinfo

A vulnerability was found in Linux Kernel 4.0.5 on x86 (Operating System) and classified as problematic. Affected by this issue is the function kvm_apic_has_events of the component KVM Virtualization Support. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability.

The weakness was disclosed 06/30/2015 as Bug 1230770 as confirmed bug report (Bugzilla). The advisory is shared for download at bugzilla.redhat.com. This vulnerability is handled as CVE-2015-4692 since 06/19/2015. The attack needs to be approached locally. A simple authentication is necessary for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 58628 (Fedora 16 : openstack-keystone-2011.3.1-3.fc16 (2012-4960)), 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 175492 (Debian Security Update for linux (DSA 3329-1)).

Upgrading to version 4.0.6-300.fc22 eliminates this vulnerability. The upgrade is hosted for download at kernel.org. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 19305.

The vulnerability is also documented in the databases at X-Force (104441), Tenable (58628), SecurityFocus (BID 60688†), Secunia (SA53349†) and Vulnerability Center (SBV-51611†). The entries VDB-76062, VDB-76831, VDB-76848 and VDB-76872 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.5
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 58628
Nessus Name: Fedora 16 : openstack-keystone-2011.3.1-3.fc16 (2012-4960)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703329
OpenVAS Name: Debian Security Advisory DSA 3329-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.0.6-300.fc22
Patch: git.kernel.org
TippingPoint: 🔍
ISS Proventia IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

06/19/2013 🔍
10/04/2013 +107 days 🔍
06/10/2015 +614 days 🔍
06/19/2015 +9 days 🔍
06/30/2015 +11 days 🔍
07/09/2015 +9 days 🔍
07/27/2015 +18 days 🔍
07/28/2015 +1 days 🔍
05/23/2022 +2491 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 1230770
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-4692 (🔍)
GCVE (CVE): GCVE-0-2015-4692
GCVE (VulDB): GCVE-100-76352

OVAL: 🔍

X-Force: 104441 - Linux Kernel kvm_apic_has_events denial of service
SecurityFocus: 60688 - OTRS CVE-2013-4088 Remote Security Bypass Vulnerability
Secunia: 53349 - Media Player Classic M2TS and RM File Processing Buffer Overflow Vulnerabilties, Highly Critical
SecurityTracker: 1032798
Vulnerability Center: 51611 - OTRS 3.0.0 - 3.0.21, 3.1.0 - 3.1.17, 3.2.0 - 3.2.8 Remote Information Disclosure via TicketWatch, Medium

See also: 🔍

Entryinfo

Created: 07/09/2015 10:09
Updated: 05/23/2022 18:28
Changes: 07/09/2015 10:09 (76), 08/03/2017 03:20 (11), 05/23/2022 18:19 (5), 05/23/2022 18:28 (1)
Complete: 🔍
Cache ID: 216:D44:103

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