Linux Kernel up to 4.14.6 net/ipv4/raw.c raw_sendmsg race condition

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 4.14.6. It has been declared as critical. The affected element is the function raw_sendmsg of the file net/ipv4/raw.c. Such manipulation leads to race condition. This vulnerability is uniquely identified as CVE-2017-17712. Local access is required to approach this attack. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.14.6 (Operating System) and classified as critical. Affected by this issue is the function raw_sendmsg of the file net/ipv4/raw.c. The manipulation with an unknown input 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. CVE summarizes:

The raw_sendmsg() function in net/ipv4/raw.c in the Linux kernel through 4.14.6 has a race condition in inet->hdrincl that leads to uninitialized stack pointer usage; this allows a local user to execute code and gain privileges.

The bug was discovered 12/11/2017. The weakness was disclosed 12/16/2017 as confirmed git commit (GIT Repository). The advisory is shared for download at git.kernel.org. This vulnerability is handled as CVE-2017-17712 since 12/15/2017. The attack needs to be approached locally. Required for exploitation is a simple authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105447 (Fedora 26 : kernel (2017-7810b7c59f)), 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 277077 (Fedora Security Update for kernel (FEDORA-2017-7810b7c59f)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105447). The entry VDB-110784 is pretty similar. Once again VulDB remains the best source for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Race condition
CWE: CWE-362
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: 105447
Nessus Name: Fedora 26 : kernel (2017-7810b7c59f)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 840518
OpenVAS Name: Fedora Update for kernel FEDORA-2017-f7cb245861
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

12/11/2017 🔍
12/15/2017 +4 days 🔍
12/15/2017 +0 days 🔍
12/16/2017 +1 days 🔍
12/16/2017 +0 days 🔍
12/24/2017 +8 days 🔍
12/26/2017 +2 days 🔍
01/18/2023 +1849 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2017-7810b7c59f
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-17712 (🔍)
GCVE (CVE): GCVE-0-2017-17712
GCVE (VulDB): GCVE-100-110732

OVAL: 🔍
See also: 🔍

Entryinfo

Created: 12/16/2017 16:29
Updated: 01/18/2023 09:43
Changes: 12/16/2017 16:29 (78), 12/15/2019 15:39 (3), 01/18/2023 09:43 (5)
Complete: 🔍
Cache ID: 216:9EE:103

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