CVE-2018-3953

MITRE NVD CVE.ORG Print: PDF PDF

Summary

CVECVE-2018-3953
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-10-17 02:29:00 UTC
Updated2023-04-26 18:52:00 UTC
DescriptionDevices in the Linksys ESeries line of routers (Linksys E1200 Firmware Version 2.0.09 and Linksys E2500 Firmware Version 3.0.04) are susceptible to OS command injection vulnerabilities due to improper filtering of data passed to and retrieved from NVRAM. Data entered into the 'Router Name' input field through the web portal is submitted to apply.cgi as the value to the 'machine_name' POST parameter. When the 'preinit' binary receives the SIGHUP signal, it enters a code path that continues until it reaches offset 0x0042B5C4 in the 'start_lltd' function. Within the 'start_lltd' function, a 'nvram_get' call is used to obtain the value of the user-controlled 'machine_name' NVRAM entry. This value is then entered directly into a command intended to write the host name to a file and subsequently executed.

Risk And Classification

Problem Types: CWE-78

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Linksys E1200 - All All All
Hardware Linksys E1200 - All All All
Operating System Linksys E1200 Firmware 2.0.09 All All All
Operating System Linksys E1200 Firmware 2.0.09 All All All
Hardware Linksys E2500 - All All All
Hardware Linksys E2500 - All All All
Operating System Linksys E2500 Firmware 3.0.04 All All All
Operating System Linksys E2500 Firmware 3.0.04 All All All

References

ReferenceSourceLinkTags
TALOS-2018-0625 || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence MISC talosintelligence.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

CVE.report and Source URL Uptime Status status.cve.report