Linux Kernel up to 4.10.1 Multithreading net/sctp/socket.c double free

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel up to 4.10.1. Affected by this vulnerability is an unknown functionality of the file net/sctp/socket.c of the component Multithreading. Performing a manipulation results in double free. This vulnerability is cataloged as CVE-2017-6353. The attack must be initiated from a local position. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.10.1 (Operating System). It has been classified as problematic. This affects some unknown functionality of the file net/sctp/socket.c of the component Multithreading. The manipulation with an unknown input leads to a double free vulnerability. CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. This is going to have an impact on availability. The summary by CVE is:

net/sctp/socket.c in the Linux kernel through 4.10.1 does not properly restrict association peel-off operations during certain wait states, which allows local users to cause a denial of service (invalid unlock and double free) via a multithreaded application. NOTE: this vulnerability exists because of an incorrect fix for CVE-2017-5986.

The bug was discovered 02/27/2017. The weakness was shared 03/01/2017 by Salvatore Bonaccorso (oss-sec). The advisory is shared at openwall.com. This vulnerability is uniquely identified as CVE-2017-6353 since 02/26/2017. An attack has to be approached locally. A authentication is required for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 97640 (Debian DLA-849-1 : 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 175984 (Debian Security Update for Linux (DSA 3804-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97640) and SecurityFocus (BID 96473†). The entries VDB-97226, VDB-97281, VDB-97445 and VDB-97446 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Double free
CWE: CWE-415 / 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: 97640
Nessus Name: Debian DLA-849-1 : linux security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703804
OpenVAS Name: Debian Security Advisory DSA 3804-1 (linux - security update)
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: git.kernel.org

Timelineinfo

02/26/2017 🔍
02/27/2017 +1 days 🔍
02/28/2017 +1 days 🔍
03/01/2017 +1 days 🔍
03/01/2017 +0 days 🔍
03/02/2017 +1 days 🔍
03/09/2017 +7 days 🔍
03/10/2017 +1 days 🔍
09/03/2020 +1273 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: openwall.com
Researcher: Salvatore Bonaccorso
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-6353 (🔍)
GCVE (CVE): GCVE-0-2017-6353
GCVE (VulDB): GCVE-100-97449

OVAL: 🔍

SecurityFocus: 96473 - Linux Kernel CVE-2017-6353 Incomplete Fix Local Denial of Service Vulnerability
OSVDB: - CVE-2017-6353 - Linux - Double Free Issue

See also: 🔍

Entryinfo

Created: 03/02/2017 09:29
Updated: 09/03/2020 14:33
Changes: 03/02/2017 09:29 (81), 09/03/2020 14:33 (6)
Complete: 🔍
Cache ID: 216:A24:103

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