// For flags

CVE-2020-25648

nss: TLS 1.3 CCS flood remote DoS Attack

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se encontró un fallo en la manera en que NSS manejaba los mensajes CCS (ChangeCipherSpec) en TLS versión 1.3. Este fallo permite a un atacante remoto enviar múltiples mensajes CCS, causando una denegación de servicio para los servidores compilados con la biblioteca NSS. La mayor amenaza de esta vulnerabilidad es la disponibilidad del sistema. Este fallo afecta a NSS versiones anteriores a 3.58

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.

Red Hat Advanced Cluster Management for Kubernetes 2.3.3 images Red Hat Advanced Cluster Management for Kubernetes provides the capabilities to address common challenges that administrators and site reliability engineers face as they work across a range of public and private cloud environments. Clusters and applications are all visible and managed from a single console—with security policy built in. This advisory contains the container images for Red Hat Advanced Cluster Management for Kubernetes, which fix several bugs and provide security updates. Issues addressed include denial of service, information leakage, integer overflow, and out of bounds read vulnerabilities.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-09-16 CVE Reserved
  • 2020-10-20 CVE Published
  • 2024-08-04 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-770: Allocation of Resources Without Limits or Throttling
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mozilla
Search vendor "Mozilla"
Network Security Services
Search vendor "Mozilla" for product "Network Security Services"
< 3.58
Search vendor "Mozilla" for product "Network Security Services" and version " < 3.58"
-
Affected
Redhat
Search vendor "Redhat"
Enterprise Linux
Search vendor "Redhat" for product "Enterprise Linux"
7.0
Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"
-
Affected
Redhat
Search vendor "Redhat"
Enterprise Linux
Search vendor "Redhat" for product "Enterprise Linux"
8.0
Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
31
Search vendor "Fedoraproject" for product "Fedora" and version "31"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
32
Search vendor "Fedoraproject" for product "Fedora" and version "32"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
Fedora
Search vendor "Fedoraproject" for product "Fedora"
33
Search vendor "Fedoraproject" for product "Fedora" and version "33"
-
Affected
Oracle
Search vendor "Oracle"
Communications Offline Mediation Controller
Search vendor "Oracle" for product "Communications Offline Mediation Controller"
12.0.0.3.0
Search vendor "Oracle" for product "Communications Offline Mediation Controller" and version "12.0.0.3.0"
-
Affected
Oracle
Search vendor "Oracle"
Communications Pricing Design Center
Search vendor "Oracle" for product "Communications Pricing Design Center"
12.0.0.3.0
Search vendor "Oracle" for product "Communications Pricing Design Center" and version "12.0.0.3.0"
-
Affected
Oracle
Search vendor "Oracle"
Jd Edwards Enterpriseone Tools
Search vendor "Oracle" for product "Jd Edwards Enterpriseone Tools"
< 9.2.6.0
Search vendor "Oracle" for product "Jd Edwards Enterpriseone Tools" and version " < 9.2.6.0"
-
Affected