Linux Kernel up to 4.2.x Lock Socket net/sctp/sm_sideeffect.c race condition

CVSS Meta Temp Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel up to 4.2.x. This affects an unknown function of the file net/sctp/sm_sideeffect.c of the component Lock Socket Handler. This manipulation causes race condition. This vulnerability appears as CVE-2015-8767. The attack requires local access. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel up to 4.2.x (Operating System). Affected by this vulnerability is some unknown functionality of the file net/sctp/sm_sideeffect.c of the component Lock Socket Handler. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

net/sctp/sm_sideeffect.c in the Linux kernel before 4.3 does not properly manage the relationship between a lock and a socket, which allows local users to cause a denial of service (deadlock) via a crafted sctp_accept call.

The weakness was presented 02/08/2016 (Website). It is possible to read the advisory at github.com. This vulnerability is known as CVE-2015-8767 since 01/11/2016. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 87995 (Debian DSA-3448-1 : linux - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168771 (SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2016:1203-1)).

Upgrading to version 4.3 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (110582), Tenable (87995), SecurityFocus (BID 80268†) and Vulnerability Center (SBV-56442†). See VDB-8569, VDB-78541, VDB-79223 and VDB-79228 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.7
VulDB Meta Temp Score: 7.1

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Race condition
CWE: CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 87995
Nessus Name: Debian DSA-3448-1 : linux - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703448
OpenVAS Name: Debian Security Advisory DSA 3448-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.3
Patch: git.kernel.org

Timelineinfo

01/10/2016 🔍
01/10/2016 +0 days 🔍
01/11/2016 +0 days 🔍
01/18/2016 +7 days 🔍
01/19/2016 +1 days 🔍
02/07/2016 +18 days 🔍
02/08/2016 +1 days 🔍
02/08/2016 +0 days 🔍
02/08/2016 +0 days 🔍
07/07/2022 +2340 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2016:1277
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8767 (🔍)
GCVE (CVE): GCVE-0-2015-8767
GCVE (VulDB): GCVE-100-80803

OVAL: 🔍

X-Force: 110582 - Linux Kernel sm_sideeffect.c denial of service
SecurityFocus: 80268 - Linux Kernel 'sctp/sm_sideeffect.c' Denial of Service Vulnerability
Vulnerability Center: 56442 - Linux kernel before 4.3 Local DoS via a Crafted \x27sctp_accept\x27 Call, Medium

See also: 🔍

Entryinfo

Created: 02/08/2016 09:05
Updated: 07/07/2022 08:07
Changes: 02/08/2016 09:05 (77), 08/21/2018 08:52 (13), 07/07/2022 08:01 (5), 07/07/2022 08:07 (1)
Complete: 🔍
Cache ID: 216:1C9:103

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