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CVE
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CVE-2020-25648Date: (C)2020-10-21   (M)2023-12-22


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.5CVSS Score : 5.0
Exploit Score: 3.9Exploit Score: 10.0
Impact Score: 3.6Impact Score: 2.9
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: NONEAuthentication: NONE
User Interaction: NONEConfidentiality: NONE
Scope: UNCHANGEDIntegrity: NONE
Confidentiality: NONEAvailability: PARTIAL
Integrity: NONE 
Availability: HIGH 
  
Reference:
FEDORA-2020-a857113c7a
FEDORA-2020-bb91bf9b8e
FEDORA-2020-f29254bd5e
N/A
https://lists.debian.org/debian-lts-announce/2023/10/msg00039.html
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
https://bugzilla.redhat.com/show_bug.cgi?id=1887319
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.58_release_notes
https://www.oracle.com/security-alerts/cpuapr2022.html
https://www.oracle.com/security-alerts/cpuoct2021.html

CPE    2
cpe:/o:redhat:enterprise_linux:7.0
cpe:/a:mozilla:network_security_services
CWE    1
CWE-770
OVAL    14
oval:org.secpod.oval:def:506032
oval:org.secpod.oval:def:506347
oval:org.secpod.oval:def:118998
oval:org.secpod.oval:def:1601446
...

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