Linux Kernel up to 4.16-rc6 net/dccp/output.c dccp_write_xmit null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 4.16-rc6. It has been rated as problematic. Affected by this vulnerability is the function dccp_write_xmit of the file net/dccp/output.c. Performing a manipulation results in null pointer dereference. This vulnerability is cataloged as CVE-2018-1130. The attack must be initiated from a local position. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 4.16-rc6 (Operating System). This affects the function dccp_write_xmit of the file net/dccp/output.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. The summary by CVE is:

Linux kernel before version 4.16-rc7 is vulnerable to a null pointer dereference in dccp_write_xmit() function in net/dccp/output.c in that allows a local user to cause a denial of service by a number of certain crafted system calls.

The bug was discovered 03/07/2018. The weakness was shared 05/10/2018 (Website). It is possible to read the advisory at marc.info. This vulnerability is uniquely identified as CVE-2018-1130 since 12/04/2017. Attacking locally is a requirement. The successful exploitation requires a authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 64 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 111021 (OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0236)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family OracleVM Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157849 (Oracle Enterprise Linux Security Update for kernel (ELSA-2018-3083)).

Upgrading to version 4.16-rc7 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (111021) and SecurityFocus (BID 103185†). The entries VDB-81153, VDB-87616, VDB-105605 and VDB-109511 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.7

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CNA Base Score: 5.5
CNA Vector (Red Hat, Inc.): 🔍

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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Nessus ID: 111021
Nessus Name: OracleVM 3.4 : Unbreakable / etc (OVMSA-2018-0236)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 57937
OpenVAS Name: SuSE Update for Linux Kernel openSUSE-SU-2018:1418-1 (Linux Kernel)
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: 🔍

Upgrade: Kernel 4.16-rc7
Patch: git.kernel.org

Timelineinfo

12/04/2017 🔍
02/27/2018 +85 days 🔍
03/07/2018 +8 days 🔍
05/10/2018 +63 days 🔍
05/10/2018 +0 days 🔍
05/10/2018 +0 days 🔍
07/11/2018 +62 days 🔍
07/12/2018 +1 days 🔍
03/11/2023 +1703 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2018:1854
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-1130 (🔍)
GCVE (CVE): GCVE-0-2018-1130
GCVE (VulDB): GCVE-100-117579
SecurityFocus: 103185 - Linux Kernel 'net/rds/rdma.c' Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 05/10/2018 21:40
Updated: 03/11/2023 14:31
Changes: 05/10/2018 21:40 (80), 02/04/2020 09:33 (4), 03/11/2023 14:28 (5), 03/11/2023 14:31 (12)
Complete: 🔍
Cache ID: 216::103

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