CVE-2021-3580

HIGH

nettle < 3.7.3 - Denial of Service via RSA Decryption Ciphertext Handling

Title source: llm
STIX 2.1

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.

References (4)

Core 4
Core References
Mailing List, Third Party Advisory mailing-list
https://lists.debian.org/debian-lts-announce/2021/09/msg00008.html
Third Party Advisory vendor-advisory
https://security.gentoo.org/glsa/202401-24
Issue Tracking, Patch, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1967983

Scores

CVSS v3 7.5
EPSS 0.0010
EPSS Percentile 27.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-20
Status published
Products (5)
debian/debian_linux 9.0
netapp/ontap_select_deploy_administration_utility
nettle_project/nettle < 3.7.3
redhat/enterprise_linux 7.0
redhat/enterprise_linux 8.0
Published Aug 05, 2021
Tracked Since Feb 18, 2026