Lanner IAC-AST2500A 1.10.0 spx_restservice modifyUserb_func stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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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.
9.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Lanner IAC-AST2500A 1.10.0. It has been declared as critical. This affects the function modifyUserb_func of the component spx_restservice. The manipulation results in stack-based overflow. This vulnerability is reported as CVE-2021-26731. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as very critical has been found in Lanner IAC-AST2500A 1.10.0. Affected is the function modifyUserb_func of the component spx_restservice. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as 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). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Command injection and multiple stack-based buffer overflows vulnerabilities in the modifyUserb_func function of spx_restservice allow an attacker to execute arbitrary code with the same privileges as the server user (root). This issue affects: Lanner Inc IAC-AST2500A standard firmware version 1.10.0.

The weakness was disclosed 10/24/2022. The advisory is available at nozominetworks.com. This vulnerability is traded as CVE-2021-26731 since 02/05/2021. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/30/2024).

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

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.4
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.4
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.1
CNA Vector (Nozomi Networks Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/05/2021 🔍
10/24/2022 +625 days 🔍
10/24/2022 +0 days 🔍
09/30/2024 +707 days 🔍

Sourcesinfo

Advisory: nozominetworks.com
Status: Not defined

CVE: CVE-2021-26731 (🔍)
GCVE (CVE): GCVE-0-2021-26731
GCVE (VulDB): GCVE-100-212022

Entryinfo

Created: 10/24/2022 21:07
Updated: 09/30/2024 17:58
Changes: 10/24/2022 21:07 (39), 11/19/2022 14:58 (19), 09/30/2024 17:58 (15)
Complete: 🔍
Cache ID: 216::103

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