CVE-2021-3580

HighCVSS 7.5/10Last modified Oct 14, 2026

Description

A flaw was found in the way nettle's RSA decryption functions handled specially crafted ciphertext. An attacker could use this flaw to provide a manipulated ciphertext leading to application crash and denial of service.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-20

Affected software

Vendor	Product	Versions
n/a	nettle	nettle 3.7.3
Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	>= V3.1.0, < V3.1.5
Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	>= V3.1.0, < V3.1.5
Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	>= V3.1.0, < V3.1.5
Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	>= V3.1.0, < V3.1.5
Siemens	SIPLUS S7-1500 CPU 1518-4 PN/DP MFP	>= V3.1.0, < V3.1.5

References

https://bugzilla.redhat.com/show_bug.cgi?id=1967983Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/09/msg00008.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202401-24
https://security.netapp.com/advisory/ntap-20211104-0006/Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1967983Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/09/msg00008.htmlMailing List, Third Party Advisory
https://security.gentoo.org/glsa/202401-24
https://security.netapp.com/advisory/ntap-20211104-0006/Third Party Advisory
https://cert-portal.siemens.com/productcert/html/ssa-398330.html

Timeline

Published: Aug 5, 2021
Last modified: Oct 14, 2026
NVD status: Modified

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