#VU54659 Integer overflow in pywin32 - CVE-2021-32559

Vulnerability identifier: #VU54659

Vulnerability risk: Low

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-32559

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
pywin32
Web applications / Modules and components for CMS

Vendor: Mark Hammond

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to integer overflow. A remote administrator can pass specially crafted data to the application, trigger integer overflow and cause a denial of service on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

pywin32: 126 - 300

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External links
https://github.com/mhammond/pywin32/releases
https://github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2021-0017/FEYE-2021-0017.md

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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