VDB-101722 · CVE-2017-9211 · Qualys 351446

Linux Kernel up to 4.11.2 crypto/skcipher.c setkey null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 4.11.2. Impacted is the function setkey of the file crypto/skcipher.c. Executing a manipulation can lead to null pointer dereference. This vulnerability is tracked as CVE-2017-9211. The attack is restricted to local execution. No exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 4.11.2 (Operating System) and classified as problematic. This vulnerability affects the function setkey of the file crypto/skcipher.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. As an impact it is known to affect availability. CVE summarizes:

The crypto_skcipher_init_tfm function in crypto/skcipher.c in the Linux kernel through 4.11.2 relies on a setkey function that lacks a key-size check, which allows local users to cause a denial of service (NULL pointer dereference) via a crafted application.

The bug was discovered 05/23/2017. The weakness was disclosed 05/23/2017 as confirmed git commit (GIT Repository). The advisory is available at git.kernel.org. This vulnerability was named CVE-2017-9211 since 05/23/2017. Local access is required to approach this attack. The requirement for exploitation is a single authentication. Technical details are known, but there is no available exploit.

The commercial vulnerability scanner Qualys is able to test this issue with plugin 351446 (Amazon Linux Security Advisory for kernel: ALAC2012-2018-012).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

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: 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: Null pointer dereference
CWE: CWE-476 / CWE-404
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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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

05/23/2017 🔍
05/23/2017 +0 days 🔍
05/23/2017 +0 days 🔍
05/23/2017 +0 days 🔍
05/23/2017 +0 days 🔍
08/25/2024 +2651 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 9933e113c2e87a9f46a40fde8dafbf801dca1ab9
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-9211 (🔍)
GCVE (CVE): GCVE-0-2017-9211
GCVE (VulDB): GCVE-100-101722
OSVDB: - CVE-2017-9211 - Linux - Kernel - Denial of Service Issue

Entryinfo

Created: 05/23/2017 14:53
Updated: 08/25/2024 21:54
Changes: 05/23/2017 14:53 (61), 10/02/2020 16:36 (3), 12/07/2022 09:25 (4), 08/25/2024 21:54 (16)
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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