Advisory Details

July 19th, 2021

Siemens JT2Go BMP File Parsing Double Free Remote Code Execution Vulnerability

ZDI-21-872
ZDI-CAN-13060

CVE ID CVE-2021-34298
CVSS SCORE 7.8, (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Siemens
AFFECTED PRODUCTS JT2Go
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Siemens JT2Go. 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 BMP files. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS

https://us-cert.cisa.gov/ics/advisories/icsa-21-194-15
https://cert-portal.siemens.com/productcert/pdf/ssa-483182.pdf


DISCLOSURE TIMELINE
  • 2021-03-18 - Vulnerability reported to vendor
  • 2021-07-19 - Coordinated public release of advisory
CREDIT xina1i at SecZone
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