CVE-2020-25648
HIGH7.5EPSS 0.10%nss - security update
Published: 10/20/2020Modified: 12/3/2025
Also known as:ALPINE-CVE-2020-25648DEBIAN-CVE-2020-25648
Description
A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote attacker to send multiple CCS messages, causing a denial of service for servers compiled with the NSS library. The highest threat from this vulnerability is to system availability. This flaw affects NSS versions before 3.58.
Affected packages (3)
- Alpine/nssfrom 0, < 3.58-r0
- Debian/nssfrom 0, < 2:3.58-1
- Debian/nssfrom 0, < 2:3.42.1-1+deb10u7
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |