#VU61603 Buffer overflow in Numpy - CVE-2021-33430

Vulnerability identifier: #VU61603

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-33430

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

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

Vendor: Numpy

Description

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

The vulnerability exists due to a boundary error in the PyArray_NewFromDescr_int() function of ctors.c. A remote attacker can pass specially crafted data to the library and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Numpy: 1.9.0 b1 - 1.20.3

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External links
https://github.com/numpy/numpy/issues/18939

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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.