Linux Kernel up to 5.11.13 DOI Definition net/ipv4/cipso_ipv4.c cipso_v4_genopt use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel up to 5.11.13 and classified as critical. This vulnerability affects the function cipso_v4_genopt of the file net/ipv4/cipso_ipv4.c of the component DOI Definition Handler. Performing a manipulation results in use after free. This vulnerability is identified as CVE-2021-33033. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.11.13 (Operating System). It has been classified as critical. This affects the function cipso_v4_genopt of the file net/ipv4/cipso_ipv4.c of the component DOI Definition Handler. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 05/15/2021. The advisory is shared at sites.google.com. This vulnerability is uniquely identified as CVE-2021-33033. Technical details are known, but no exploit is available.

Upgrading to version 5.11.14 eliminates this vulnerability. The upgrade is hosted for download at cdn.kernel.org. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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 5.11.14
Patch: git.kernel.org

Timelineinfo

05/14/2021 🔍
05/15/2021 +1 days 🔍
05/15/2021 +0 days 🔍
05/16/2021 +1 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: sites.google.com
Status: Confirmed

CVE: CVE-2021-33033 (🔍)
GCVE (CVE): GCVE-0-2021-33033
GCVE (VulDB): GCVE-100-175101

Entryinfo

Created: 05/15/2021 08:09
Updated: 05/16/2021 16:14
Changes: 05/15/2021 08:09 (44), 05/16/2021 16:14 (5)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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