klibc up to 2.0.8 on 64-bit cpio Command integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

A vulnerability classified as critical has been found in klibc up to 2.0.8 on 64-bit. Affected is an unknown part of the component cpio Command. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 04/30/2021. The advisory is available at lists.zytor.com. This vulnerability is traded as CVE-2021-31871. The technical details are unknown and an exploit is not available.

Upgrading to version 2.0.9 eliminates this vulnerability. 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.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
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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

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: klibc 2.0.9
Patch: git.kernel.org

Timelineinfo

04/29/2021 🔍
04/30/2021 +1 days 🔍
04/30/2021 +0 days 🔍
05/03/2021 +3 days 🔍

Sourcesinfo

Advisory: lists.zytor.com
Status: Confirmed

CVE: CVE-2021-31871 (🔍)

Entryinfo

Created: 04/30/2021 14:46
Updated: 05/03/2021 21:12
Changes: 04/30/2021 14:46 (39), 05/03/2021 21:12 (5)
Complete: 🔍

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