CVE-2021-27399: Siemens Simcenter Femap modfem File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
A vulnerability has been identified in Simcenter Femap 2020.2 (All versions < V2020.2.MP3), Simcenter Femap 2021.1 (All versions < V2021.1.MP3). The femap.exe application lacks proper validation of user-supplied data when parsing FEMAP files. This could result in an out of bounds write past the end of an allocated structure, a different vulnerability than CVE-2021-27387. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-12820)
Other sources
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Siemens Simcenter Femap. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of modfem files. The issue results from the lack of proper validation of user-supplied data, which can result in a write before the start of an allocated data structure. An attacker can leverage this vulnerability to execute code in the context of the current process.
— ZDI
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2021-27399?
CVE-2021-27399 is a vulnerability that allows remote attackers to execute arbitrary code on affected installations of Siemens Simcenter Femap.
How can the CVE-2021-27399 vulnerability be exploited?
The CVE-2021-27399 vulnerability can be exploited by visiting a malicious page or opening a malicious file.
Which software is affected by CVE-2021-27399?
Simcenter Femap versions 2020.2, 2020.2-maintenance_pack1, 2020.2-maintenance_pack2, 2021.1, 2021.1-maintenance_pack1, and 2021.1-maintenance_pack2 are affected by CVE-2021-27399.
What is the severity of CVE-2021-27399?
CVE-2021-27399 has a severity rating of 7.8 (high).
How can I fix the CVE-2021-27399 vulnerability?
To fix the CVE-2021-27399 vulnerability, it is recommended to update to the latest version of Siemens Simcenter Femap.