High severity · published Oct 20, 2020
CVE-2020-25648
A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3
7.5
CVSS
3.9%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.9% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CO
Communications Offline Mediation Controller · Oracle
12.0.0.3.0 · source: NVD
CP
Communications Pricing Design Center · Oracle
12.0.0.3.0 · source: NVD
EL
Enterprise Linux · Redhat
7.0; 8.0 · source: NVD
FE
Fedora · Fedoraproject
31; 32; 33 · source: NVD
JE
JD Edwards Enterpriseone Tools · Oracle
before 9.2.6.0 · source: NVD
NS
Network Security Services · Mozilla
before 3.58 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25648
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-25648
Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1887319
Release Notes
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.58_release_notes
lists.apache.org
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E
lists.debian.org
https://lists.debian.org/debian-lts-announce/2023/10/msg00039.html
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERA5SVJQXQMDGES7RIT4F4NQVLD35RXN/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HRM53IQCPZT2US3M7JXTP6I6IBA5RGOD/
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