Linux Kernel up to 4.13.4 KASLR kernel/exit.c information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 4.13.4 and classified as problematic. This impacts an unknown function of the file kernel/exit.c of the component KASLR. Executing a manipulation can lead to information disclosure. The identification of this vulnerability is CVE-2017-14954. The attack can only be executed locally. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.13.4 (Operating System). It has been declared as problematic. This vulnerability affects an unknown code of the file kernel/exit.c of the component KASLR. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The waitid implementation in kernel/exit.c in the Linux kernel through 4.13.4 accesses rusage data structures in unintended cases, which allows local users to obtain sensitive information, and bypass the KASLR protection mechanism, via a crafted system call.

The bug was discovered 09/29/2017. The weakness was shared 10/02/2017 (Website). The advisory is available at git.kernel.org. This vulnerability was named CVE-2017-14954 since 09/30/2017. Local access is required to approach this attack. A single authentication is needed for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

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 103665 (Fedora 26 : kernel (2017-c0e81a1c7a)), 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 196978 (Ubuntu Security Notification for Linux, Linux-raspi2 Vulnerabilities (USN-3487-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (103665). The entry VDB-112500 is related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: 103665
Nessus Name: Fedora 26 : kernel (2017-c0e81a1c7a)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for kernel FEDORA-2017-c0e81a1c7a
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

09/29/2017 🔍
09/30/2017 +1 days 🔍
10/01/2017 +1 days 🔍
10/02/2017 +1 days 🔍
10/02/2017 +0 days 🔍
10/04/2017 +2 days 🔍
10/05/2017 +1 days 🔍
12/30/2022 +1912 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2017-c0e81a1c7a
Status: Not defined

CVE: CVE-2017-14954 (🔍)
GCVE (CVE): GCVE-0-2017-14954
GCVE (VulDB): GCVE-100-107314
See also: 🔍

Entryinfo

Created: 10/02/2017 10:15
Updated: 12/30/2022 13:47
Changes: 10/02/2017 10:15 (76), 11/21/2019 07:28 (3), 12/30/2022 13:41 (5), 12/30/2022 13:47 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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