Remote Code Execution Vulnerability in NSS Library by Mozilla
CVE-2020-25648

7.5HIGH

Key Information:

Vendor
Mozilla
Status
Nss
Vendor
CVE Published:
20 October 2020

Summary

A flaw exists in the Network Security Services library's handling of ChangeCipherSpec messages within TLS 1.3, enabling remote attackers to flood servers with multiple CCS messages. This can lead to a denial of service, as the targeted servers may become unresponsive. The issue affects all NSS versions prior to 3.58, highlighting the importance of upgrading to mitigate potential availability threats.

Affected Version(s)

nss nss versions before 3.58

References

https://bugzilla.redhat.com/show_bug.cgi?id=1887319
https://developer.mozilla.org/en-US/docs/Mozilla/Projects...
https://lists.fedoraproject.org/archives/list/package-ann...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.