Advisory Details

February 24th, 2021

Siemens JT2Go PCX File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2020-26995
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 processing of PCX files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute 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-21-012-03
DISCLOSURE TIMELINE	2020-12-04 - Vulnerability reported to vendor 2021-02-24 - Coordinated public release of advisory
CREDIT	Francis Provencher {PRL}

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