CVE-2011-4530

Siemens Automation License Manager (ALM) 4.0 through 5.1+SP1+Upd1 does not properly copy fields obtained from clients, which allows remote attackers to cause a denial of service (exception and daemon crash) via long fields, as demonstrated by fields to the (1) open_session->workstation->NAME or (2) grant->VERSION function.

• CWE-20

• http://aluigi.altervista.org/adv/almsrvx_1-adv.txtExploit
• http://support.automation.siemens.com/WW/llisapi.dll/57252401?func=ll&objId=57252401&objAction=csView&nodeid0=17323948&lang=en&siteid=cseus&aktprim=0&extranet=standard&viewreg=WW&load=contentVendor Advisory
• http://support.automation.siemens.com/WW/view/en/114358
• http://www.us-cert.gov/control_systems/pdf/ICSA-11-361-01.pdfUS Government Resource
• http://aluigi.altervista.org/adv/almsrvx_1-adv.txtExploit
• http://support.automation.siemens.com/WW/llisapi.dll/57252401?func=ll&objId=57252401&objAction=csView&nodeid0=17323948&lang=en&siteid=cseus&aktprim=0&extranet=standard&viewreg=WW&load=contentVendor Advisory
• http://support.automation.siemens.com/WW/view/en/114358
• http://www.us-cert.gov/control_systems/pdf/ICSA-11-361-01.pdfUS Government Resource

Published

Jan 8, 2012

Last Modified

Jun 16, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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