Denial of service in pywin32



Published: 2021-07-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-32559
CWE-ID CWE-190
Exploitation vector Network
Public exploit N/A
Vulnerable software
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pywin32
Web applications / Modules and components for CMS

Vendor Mark Hammond

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Integer overflow

EUVDB-ID: #VU54659

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-32559

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

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

External links

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


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.



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