#VU53986 Out-of-bounds read in IGSS Definition - CVE-2021-22756

Vulnerability identifier: #VU53986

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-22756

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
IGSS Definition
Server applications / Other server solutions

Vendor: Schneider Electric

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition. A remote attacker can create a specially crafted CGF file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

IGSS Definition: 15.0.0.21140

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External links
https://ics-cert.us-cert.gov/advisories/icsa-21-159-04
https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2021-159-01

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.