Advisory Details

September 15th, 2021

Siemens Simcenter Femap MODFEM File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-21-1073
ZDI-CAN-14260

CVE ID CVE-2021-37176
CVSS SCORE 3.3, AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
AFFECTED VENDORS Siemens
AFFECTED PRODUCTS Simcenter Femap
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information 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 read past the end of an allocated buffer. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process.

ADDITIONAL DETAILS Siemens has issued an update to correct this vulnerability. More details can be found at:
https://us-cert.cisa.gov/ics/advisories/icsa-21-257-04
DISCLOSURE TIMELINE
  • 2021-07-20 - Vulnerability reported to vendor
  • 2021-09-15 - Coordinated public release of advisory
CREDIT xina1i
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