Linksys WRT54GL 4.30.18.006 POST Request Start_EPI wl_ant/wl_rate/WL_atten_ctl/ttcp_num/ttcp_size command injection

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Linksys WRT54GL 4.30.18.006. It has been classified as critical. This vulnerability affects the function Start_EPI of the component POST Request Handler. The manipulation of the argument wl_ant/wl_rate/WL_atten_ctl/ttcp_num/ttcp_size leads to command injection. This vulnerability is documented as CVE-2023-31742. There is not any exploit available.

Detailsinfo

A vulnerability was found in Linksys WRT54GL 4.30.18.006 (Router Operating System). It has been rated as critical. This issue affects the function Start_EPI of the component POST Request Handler. The manipulation of the argument wl_ant/wl_rate/WL_atten_ctl/ttcp_num/ttcp_size with an unknown input leads to a command injection vulnerability. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

There is a command injection vulnerability in the Linksys WRT54GL router with firmware version 4.30.18.006. If an attacker gains web management privileges, they can inject commands into the post request parameters wl_ant, wl_rate, WL_atten_ctl, ttcp_num, ttcp_size in the httpd s Start_EPI() function, thereby gaining shell privileges.

The weakness was released 05/22/2023. The identification of this vulnerability is CVE-2023-31742 since 04/29/2023. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1202 for this issue.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-36033). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Command injection
CWE: CWE-77 / CWE-74 / CWE-707
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

04/29/2023 🔍
05/22/2023 +23 days 🔍
05/22/2023 +0 days 🔍
12/28/2025 +951 days 🔍

Sourcesinfo

Vendor: linksys.com

Advisory: linksys.com
Status: Not defined

CVE: CVE-2023-31742 (🔍)
GCVE (CVE): GCVE-0-2023-31742
GCVE (VulDB): GCVE-100-229661
EUVD: 🔍

Entryinfo

Created: 05/22/2023 22:34
Updated: 12/28/2025 04:42
Changes: 05/22/2023 22:34 (40), 06/16/2023 07:27 (1), 06/16/2023 07:34 (11), 12/28/2025 04:42 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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