njs up to 0.7.1 /src/njs_object.c njs_object_set_prototype memory corruption

HistoryDiffrelatejsonxmlCTI

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.
4.1	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in njs up to 0.7.1. This issue affects the function njs_object_set_prototype of the file /src/njs_object.c. Such manipulation leads to memory corruption. This vulnerability is documented as CVE-2021-46462. The attack can be executed remotely. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in njs up to 0.7.1. It has been rated as critical. Affected by this issue is the function njs_object_set_prototype of the file /src/njs_object.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability.

The weakness was released 02/15/2022 as 449. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-46462 since 01/24/2022. There are known technical details, but no exploit is available.

Applying the patch 39e8fa1b7db1680654527f8fa0e9ee93b334ecba is able to eliminate this problem. The bugfix is ready for download at github.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 39e8fa1b7db1680654527f8fa0e9ee93b334ecba

Timelineinfo

01/24/2022 🔍
02/15/2022 +22 days 🔍
02/15/2022 +0 days 🔍
02/18/2022 +3 days 🔍

Sourcesinfo

Advisory: 449
Status: Confirmed

CVE: CVE-2021-46462 (🔍)
GCVE (CVE): GCVE-0-2021-46462
GCVE (VulDB): GCVE-100-193076

Entryinfo

Created: 02/15/2022 03:17
Updated: 02/18/2022 07:06
Changes: 02/15/2022 03:17 (41), 02/18/2022 07:06 (1)
Complete: 🔍
Cache ID: 216::103