Published: 20/10/2020 Updated: 07/11/2023

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9

VMScore: 446

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 1.3. This flaw allows a remote malicious user 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 prior to 3.58.

Vulnerable Product	Search on Vulmon	Subscribe to Product
mozilla network security services
redhat enterprise linux 7.0
redhat enterprise linux 8.0
fedoraproject fedora 31
fedoraproject fedora 32
fedoraproject fedora 33
oracle communications offline mediation controller 12.0.0.3.0
oracle communications pricing design center 12.0.0.3.0
oracle jd edwards enterpriseone tools

A flaw was found in the way NSS handled CCS (ChangeCipherSpec) messages in TLS 13 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 (CVE-2020-25648) ...

A collection of SSL/TLS security related resources.

Awesome SSL/TLS Hacks Contents Awesome SSL/TLS Hacks Contents SSL/TLS Protocol History SSL/TLS Hacks Cryptographic Issues CBC Issues RC4 Issues Compression Issues RSA Issues Implementation Issues Some Open Source Implementations of SSL/TLS OpenSSL Version History Vulnerabilities Fizz Vulnerabilities OpenSSL Vulnerabilities Tools Fuzzing Programing Scanning Others

A collection of SSL/TLS security related resources.

Awesome SSL/TLS Hacks Contents Awesome SSL/TLS Hacks Contents SSL/TLS Protocol History SSL/TLS Hacks Cryptographic Issues CBC Issues RC4 Issues Compression Issues RSA Issues Implementation Issues Some Open Source Implementations of SSL/TLS OpenSSL Version History Vulnerabilities Fizz Vulnerabilities OpenSSL Vulnerabilities Tools Fuzzing Programing Scanning Others

CWE-770 https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.58_release_notes https://bugzilla.redhat.com/show_bug.cgi?id=1887319 https://www.oracle.com//security-alerts/cpujul2021.html https://www.oracle.com/security-alerts/cpuoct2021.html https://www.oracle.com/security-alerts/cpuapr2022.html https://lists.debian.org/debian-lts-announce/2023/10/msg00039.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RPOLN6DJUYQ3QBQEGLZGV73SNIPK7GHV/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HRM53IQCPZT2US3M7JXTP6I6IBA5RGOD/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERA5SVJQXQMDGES7RIT4F4NQVLD35RXN/https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E https://nvd.nist.gov https://alas.aws.amazon.com/AL2/ALAS-2021-1664.html https://github.com/lennysec/awesome-tls-hacks

CVE-2020-25648

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