VDB-188915 · CVE-2021-21887 · TALOS-2021-1331

Lantronix PremierWave 2050 8.9.0.0R4 Web Manager stack-based overflow

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.
6.1	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Lantronix PremierWave 2050 8.9.0.0R4. Affected by this issue is some unknown functionality of the component Web Manager. The manipulation leads to stack-based overflow. This vulnerability is referenced as CVE-2021-21887. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Lantronix PremierWave 2050 8.9.0.0R4 and classified as critical. This issue affects some unknown processing of the component Web Manager. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability.

The weakness was published 12/22/2021 as TALOS-2021-1331. It is possible to read the advisory at talosintelligence.com. The identification of this vulnerability is CVE-2021-21887 since 01/04/2021. The technical details are unknown and an exploit is not publicly available.

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

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

Productinfo

Vendor

Lantronix

Name

PremierWave

Version

2050 8.9.0.0R4

License

commercial

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

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: Stack-based overflow
CWE: CWE-121 / 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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/04/2021 🔍
12/22/2021 +352 days 🔍
12/22/2021 +0 days 🔍
12/26/2021 +4 days 🔍

Sourcesinfo

Advisory: TALOS-2021-1331
Status: Not defined

CVE: CVE-2021-21887 (🔍)
GCVE (CVE): GCVE-0-2021-21887
GCVE (VulDB): GCVE-100-188915

Entryinfo

Created: 12/22/2021 22:21
Updated: 12/26/2021 07:43
Changes: 12/22/2021 22:21 (19), 12/22/2021 22:22 (19), 12/26/2021 07:43 (1)
Complete: 🔍
Cache ID: 216::103