CVE-2021-3580
Publication date 10 June 2021
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
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.
Status
Package | Ubuntu Release | Status |
---|---|---|
nettle | ||
22.04 LTS jammy |
Not affected
|
|
20.04 LTS focal |
Fixed 3.5.1+really3.5.1-2ubuntu0.2
|
|
18.04 LTS bionic |
Fixed 3.4.1-0ubuntu0.18.04.1
|
|
16.04 LTS xenial | Ignored change too intrusive | |
14.04 LTS trusty | Ignored change too intrusive |
Notes
mdeslaur
this fix relies on the RSA refactoring that is required to fix CVE-2018-16869, which is too intrusive to backport to older releases
Severity score breakdown
Parameter | Value |
---|---|
Base score | 7.5 · High |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-4990-1
- Nettle vulnerabilities
- 17 June 2021