Linux Kernel up to 4.x net/ipv6/sit.c sit_init_net release of resource

CVSS Meta Temp Score
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 4.x. This impacts the function sit_init_net of the file net/ipv6/sit.c. Such manipulation leads to release of resource. This vulnerability is uniquely identified as CVE-2019-16994. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.x (Operating System). It has been rated as problematic. Affected by this issue is the function sit_init_net of the file net/ipv6/sit.c. The manipulation with an unknown input leads to a release of resource vulnerability. Using CWE to declare the problem leads to CWE-772. The product does not release a resource after its effective lifetime has ended, i.e., after the resource is no longer needed. Impacted is availability. CVE summarizes:

In the Linux kernel before 5.0, a memory leak exists in sit_init_net() in net/ipv6/sit.c when register_netdev() fails to register sitn->fb_tunnel_dev, which may cause denial of service, aka CID-07f12b26e21a.

The weakness was disclosed 09/30/2019 (Website). The advisory is shared for download at lists.opensuse.org. This vulnerability is handled as CVE-2019-16994 since 09/30/2019. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 5.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. The vulnerability will be addressed with the following lines of code:

free_netdev(sitn->fb_tunnel_dev);

The entries VDB-142131, VDB-142161, VDB-142713 and VDB-142956 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 4.9

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

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Release of resource
CWE: CWE-772 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.0
Patch: git.kernel.org

Timelineinfo

09/30/2019 🔍
09/30/2019 +0 days 🔍
10/01/2019 +1 days 🔍
12/29/2023 +1550 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 07f12b26e21ab359261bf75cfcb424fdc7daeb6d
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-16994 (🔍)
GCVE (CVE): GCVE-0-2019-16994
GCVE (VulDB): GCVE-100-142712
See also: 🔍

Entryinfo

Created: 10/01/2019 08:40
Updated: 12/29/2023 07:15
Changes: 10/01/2019 08:40 (61), 09/16/2020 16:23 (2), 12/29/2023 07:15 (5)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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