Linux Kernel up to 4.13.5 net/packet/af_packet.c System Calls race condition

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 4.13.5 and classified as problematic. This impacts an unknown function of the file net/packet/af_packet.c. The manipulation as part of System Calls leads to race condition. This vulnerability is listed as CVE-2017-15649. The attack must be carried out locally. In addition, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.13.5 (Operating System) and classified as problematic. This issue affects an unknown part of the file net/packet/af_packet.c. The manipulation as part of a System Calls leads to a race condition vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

net/packet/af_packet.c in the Linux kernel before 4.13.6 allows local users to gain privileges via crafted system calls that trigger mishandling of packet_fanout data structures, because of a race condition (involving fanout_add and packet_do_bind) that leads to a use-after-free, a different vulnerability than CVE-2017-6346.

The bug was discovered 10/19/2017. The weakness was presented 10/19/2017 (Website). The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2017-15649 since 10/19/2017. An attack has to be approached locally. A simple authentication is necessary for exploitation. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 104166 (openSUSE Security Update : the Linux Kernel (openSUSE-2017-1194) (KRACK)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170433 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2017:2847-1)).

Upgrading to version 4.13.6 eliminates this vulnerability. A possible mitigation has been published 6 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (44053), Tenable (104166) and SecurityFocus (BID 101573†). See VDB-107859 for similar entry. 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

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

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Nessus ID: 104166
Nessus Name: openSUSE Security Update : the Linux Kernel (openSUSE-2017-1194) (KRACK)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for Linux Kernel openSUSE-SU-2017:2905-1 (Linux Kernel)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Kernel 4.13.6
Patch: git.kernel.org

Timelineinfo

10/19/2017 🔍
10/19/2017 +0 days 🔍
10/19/2017 +0 days 🔍
10/19/2017 +0 days 🔍
10/19/2017 +0 days 🔍
10/20/2017 +1 days 🔍
10/25/2017 +5 days 🔍
10/26/2017 +1 days 🔍
12/17/2024 +2609 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2018:0151
Status: Confirmed

CVE: CVE-2017-15649 (🔍)
GCVE (CVE): GCVE-0-2017-15649
GCVE (VulDB): GCVE-100-108293
SecurityFocus: 101573 - Linux Kernel CVE-2017-15649 Local Privilege Escalation Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 10/20/2017 08:44
Updated: 12/17/2024 23:12
Changes: 10/20/2017 08:44 (78), 11/27/2019 08:34 (8), 01/04/2023 09:47 (5), 12/17/2024 23:12 (17)
Complete: 🔍
Cache ID: 216:BC8:103

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