VDB-186715 · CVE-2021-42377 · GCVE-0-2021-42377

BusyBox prior 1.34.0 Hush Applet memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.9	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in BusyBox. Affected by this issue is some unknown functionality of the component Hush Applet. This manipulation causes memory corruption. This vulnerability is registered as CVE-2021-42377. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in BusyBox. Affected by this vulnerability is an unknown code of the component Hush Applet. 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.

The weakness was published 11/17/2021. It is possible to read the advisory at jfrog.com. This vulnerability is known as CVE-2021-42377 since 10/14/2021. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 1.34.0 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

BusyBox

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: BusyBox 1.34.0

Timelineinfo

10/14/2021 🔍
11/17/2021 +34 days 🔍
11/17/2021 +0 days 🔍
11/19/2021 +2 days 🔍

Sourcesinfo

Advisory: jfrog.com
Status: Confirmed

CVE: CVE-2021-42377 (🔍)
GCVE (CVE): GCVE-0-2021-42377
GCVE (VulDB): GCVE-100-186715

Entryinfo

Created: 11/17/2021 16:53
Updated: 11/19/2021 10:29
Changes: 11/17/2021 16:53 (28), 11/17/2021 16:58 (13), 11/19/2021 10:17 (1), 11/19/2021 10:23 (18), 11/19/2021 10:29 (1)
Complete: 🔍
Cache ID: 216::103