Linux Kernel up to 4.11.5 RLIM_INFINITY RLIMIT_STACK/RLIM_INFINITY access control

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6.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Linux Kernel up to 4.11.5. This impacts an unknown function of the file RLIMIT_STACK/RLIM_INFINITY. The manipulation of the argument RLIMIT_STACK/RLIM_INFINITY as part of Environment Variable results in access control. This vulnerability is reported as CVE-2017-1000365. The attack requires a local approach. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel up to 4.11.5 (Operating System). Affected is an unknown part of the file RLIMIT_STACK/RLIM_INFINITY. The manipulation of the argument RLIMIT_STACK/RLIM_INFINITY as part of a Environment Variable 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. CVE summarizes:

The Linux Kernel imposes a size restriction on the arguments and environmental strings passed through RLIMIT_STACK/RLIM_INFINITY (1/4 of the size), but does not take the argument and environment pointers into account, which allows attackers to bypass this limitation. This affects Linux Kernel versions 4.11.5 and earlier. It appears that this feature was introduced in the Linux Kernel version 2.6.23.

The bug was discovered 06/20/2017. The weakness was disclosed 06/19/2017 with Qualys (Website). The advisory is shared for download at access.redhat.com. This vulnerability is traded as CVE-2017-1000365 since 06/19/2017. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability scanner Nessus provides a plugin with the ID 101068 (Fedora 24 : kernel (2017-05f10e29f4) (Stack Clash)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370435 (Linux kernel / glibc Elevation of Privileges (Stack Clash) (Deprecated)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (101068) and SecurityFocus (BID 99156†). The entries VDB-102675 and VDB-102684 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 101068
Nessus Name: Fedora 24 : kernel (2017-05f10e29f4) (Stack Clash)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703926
OpenVAS Name: Debian Security Advisory DSA 3927-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

06/19/2017 🔍
06/19/2017 +0 days 🔍
06/19/2017 +0 days 🔍
06/20/2017 +1 days 🔍
06/20/2017 +0 days 🔍
06/20/2017 +0 days 🔍
06/23/2017 +3 days 🔍
06/28/2017 +5 days 🔍
12/08/2022 +1989 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2017-05f10e29f4
Researcher: Qualys Inc
Organization: Qualys
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-1000365 (🔍)
GCVE (CVE): GCVE-0-2017-1000365
GCVE (VulDB): GCVE-100-102672

OVAL: 🔍

SecurityFocus: 99156 - Linux Kernel CVE-2017-1000365 Local Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 06/20/2017 08:06
Updated: 12/08/2022 15:31
Changes: 06/20/2017 08:06 (78), 10/19/2019 09:10 (7), 12/29/2020 08:58 (2), 12/08/2022 15:31 (3)
Complete: 🔍
Cache ID: 216::103

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