Linux Kernel up to 4.13.10 XFRM Dump Policy net/xfrm/xfrm_user.c access control

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

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel up to 4.13.10. This impacts an unknown function of the file net/xfrm/xfrm_user.c of the component XFRM Dump Policy. Performing a manipulation results in access control. This vulnerability is known as CVE-2017-16939. Attacking locally is a requirement. Furthermore, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 4.13.10 (Operating System). This affects some unknown functionality of the file net/xfrm/xfrm_user.c of the component XFRM Dump Policy. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages.

The bug was discovered 11/23/2017. The weakness was published 11/24/2017 by Mohamed Ghannam (Website). The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2017-16939 since 11/24/2017. An attack has to be approached locally. A authentication is required for exploitation. Technical details and a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105276 (SUSE SLES12 Security Update : kernel (SUSE-SU-2017:3303-1)), 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 351257 (Amazon Linux Security Advisory for kernel: ALAS-2018-1023).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (44049), Tenable (105276) and SecurityFocus (BID 101954†). Similar entries are available at VDB-111442, VDB-115114 and VDB-122234. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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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VulDB Base Score: 🔍
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Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105276
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2017:3303-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841439
OpenVAS Name: Ubuntu Update for linux USN-3507-1
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: 🔍

Patch: git.kernel.org

Timelineinfo

11/23/2017 🔍
11/24/2017 +1 days 🔍
11/24/2017 +0 days 🔍
11/24/2017 +0 days 🔍
11/24/2017 +0 days 🔍
11/24/2017 +0 days 🔍
12/14/2017 +20 days 🔍
12/15/2017 +1 days 🔍
12/27/2024 +2569 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2018:1318
Researcher: Mohamed Ghannam
Status: Confirmed

CVE: CVE-2017-16939 (🔍)
GCVE (CVE): GCVE-0-2017-16939
GCVE (VulDB): GCVE-100-109965

OVAL: 🔍

SecurityFocus: 101954 - Linux Kernel CVE-2017-16939 Local Privilege Escalation Vulnerability

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

Entryinfo

Created: 11/24/2017 20:20
Updated: 12/27/2024 03:49
Changes: 11/24/2017 20:20 (78), 12/10/2019 15:58 (10), 01/16/2023 10:56 (5), 12/27/2024 03:49 (15)
Complete: 🔍
Cache ID: 216:519:103

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