Linux Kernel 4.5 DAX Huge Page memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$5k-$25k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Linux Kernel 4.5. Affected is an unknown function of the component DAX Huge Page Handler. Executing a manipulation can lead to memory corruption. This vulnerability is registered as CVE-2020-10757. The attack needs to be launched locally. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Linux Kernel 4.5 (Operating System). This vulnerability affects an unknown functionality of the component DAX Huge Page Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A flaw was found in the Linux Kernel in versions after 4.5-rc1 in the way mremap handled DAX Huge Pages. This flaw allows a local attacker with access to a DAX enabled storage to escalate their privileges on the system.

The weakness was published 06/09/2020 as Bug 1842525 as not defined bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2020-10757 since 03/20/2020. Local access is required to approach this attack. The successful exploitation needs a single authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 06/10/2020).

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

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 7.8
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: Memory corruption
CWE: CWE-119
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/20/2020 🔍
06/09/2020 +81 days 🔍
06/10/2020 +1 days 🔍
10/23/2020 +135 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 1842525
Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-10757 (🔍)
GCVE (CVE): GCVE-0-2020-10757
GCVE (VulDB): GCVE-100-156430

Entryinfo

Created: 06/10/2020 11:31
Updated: 10/23/2020 16:17
Changes: 06/10/2020 11:31 (40), 06/10/2020 11:33 (18), 10/23/2020 16:17 (1)
Complete: 🔍
Cache ID: 216::103

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