Linux Kernel ext4 Filesystem fs/ext4/extents.c ext4_es_cache_extent integer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel. Affected is the function ext4_es_cache_extent of the file fs/ext4/extents.c of the component ext4 Filesystem Handler. The manipulation leads to integer overflow. This vulnerability is uniquely identified as CVE-2021-3428. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Linux Kernel (Operating System) (affected version unknown). It has been rated as problematic. This issue affects the function ext4_es_cache_extent of the file fs/ext4/extents.c of the component ext4 Filesystem Handler. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is availability.

The weakness was disclosed 03/05/2022. The advisory is shared at bugzilla.redhat.com. The identification of this vulnerability is CVE-2021-3428 since 03/10/2021. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/05/2022).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.9
VulDB Temp Score: 4.8
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: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/10/2021 🔍
03/05/2022 +360 days 🔍
03/05/2022 +0 days 🔍
03/09/2022 +4 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2021-3428 (🔍)
GCVE (CVE): GCVE-0-2021-3428
GCVE (VulDB): GCVE-100-194237

Entryinfo

Created: 03/05/2022 04:35
Updated: 03/09/2022 08:56
Changes: 03/05/2022 04:35 (39), 03/09/2022 08:56 (1)
Complete: 🔍
Cache ID: 216::103

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