Sapido BR270n/BRC76n/GR297/RB1732 ip/syscmd.htm os command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Sapido BR270n, BRC76n, GR297 and RB1732. This issue affects some unknown processing of the file ip/syscmd.htm. Such manipulation leads to os command injection. This vulnerability is uniquely identified as CVE-2021-4242. The attack can be launched remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in Sapido BR270n, BRC76n, GR297 and RB1732 (version unknown) and classified as critical. Affected by this issue is an unknown function of the file ip/syscmd.htm. The manipulation with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 11/30/2022. The advisory is shared for download at blog.csdn.net. This vulnerability is handled as CVE-2021-4242. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1202.

The exploit is available at github.com. It is declared as proof-of-concept. By approaching the search of inurl:ip/syscmd.htm it is possible to find vulnerable targets with Google Hacking.

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

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 6.9

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 6.3
CNA Vector (VulDB): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍
Google Hack: 🔍

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

11/30/2022 🔍
11/30/2022 +0 days 🔍
11/30/2022 +0 days 🔍
12/24/2022 +24 days 🔍

Sourcesinfo

Advisory: blog.csdn.net
Status: Not defined

CVE: CVE-2021-4242 (🔍)
GCVE (CVE): GCVE-0-2021-4242
GCVE (VulDB): GCVE-100-214592
scip Labs: https://www.scip.ch/en/?labs.20150716

Entryinfo

Created: 11/30/2022 12:28
Updated: 12/24/2022 19:21
Changes: 11/30/2022 12:28 (39), 12/24/2022 19:13 (2), 12/24/2022 19:21 (21)
Complete: 🔍
Submitter: ireading
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #53660: sapida router remote command execution vulnerabilities (by ireading)

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