CVE-2020-25648

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

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://lists.fedoraproject.org/archives/list/[email protected]/message/RPOLN6DJUYQ3QBQEGLZGV73SNIPK7GHV/

https://lists.fedoraproject.org/archives/list/[email protected]/message/HRM53IQCPZT2US3M7JXTP6I6IBA5RGOD/

https://lists.fedoraproject.org/archives/list/[email protected]/message/ERA5SVJQXQMDGES7RIT4F4NQVLD35RXN/

https://lists.apache.org/thread.html/[email protected]%3Cdev.mina.apache.org%3E

https://www.oracle.com//security-alerts/cpujul2021.html

https://www.oracle.com/security-alerts/cpuoct2021.html

Details

Source: MITRE

Published: 2020-10-20

Updated: 2021-10-20

Type: CWE-770

Risk Information

CVSS v2

Base Score: 5

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

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH

Tenable Plugins

View all (23 total)

IDNameProductFamilySeverity
153531Oracle Linux 8 : nss / and / nspr (ELSA-2021-3572)NessusOracle Linux Local Security Checks
high
153523RHEL 8 : nss and nspr (RHSA-2021:3572)NessusRed Hat Local Security Checks
high
153520CentOS 8 : nss and nspr (CESA-2021:3572)NessusCentOS Local Security Checks
high
151510Amazon Linux AMI : nss (ALAS-2021-1518)NessusAmazon Linux Local Security Checks
high
151417EulerOS Virtualization 3.0.2.2 : nss (EulerOS-SA-2021-2150)NessusHuawei Local Security Checks
high
150978Amazon Linux 2 : nss (ALAS-2021-1664)NessusAmazon Linux Local Security Checks
high
150006GLSA-202012-21 : Mozilla Network Security Service (NSS): Denial of serviceNessusGentoo Local Security Checks
high
149056Oracle Linux 7 : nss (ELSA-2021-1384)NessusOracle Linux Local Security Checks
high
149029RHEL 7 : nss (RHSA-2021:1384)NessusRed Hat Local Security Checks
high
147683EulerOS Virtualization 2.9.0 : nss (EulerOS-SA-2021-1640)NessusHuawei Local Security Checks
critical
147577EulerOS Virtualization 3.0.2.6 : nss (EulerOS-SA-2021-1416)NessusHuawei Local Security Checks
high
147550EulerOS Virtualization 2.9.1 : nss (EulerOS-SA-2021-1615)NessusHuawei Local Security Checks
critical
147074EulerOS Virtualization 3.0.6.6 : nss (EulerOS-SA-2021-1502)NessusHuawei Local Security Checks
high
147039EulerOS Virtualization for ARM 64 3.0.6.0 : nss (EulerOS-SA-2021-1562)NessusHuawei Local Security Checks
high
146747EulerOS 2.0 SP2 : nss (EulerOS-SA-2021-1333)NessusHuawei Local Security Checks
high
145155EulerOS 2.0 SP3 : nss (EulerOS-SA-2021-1102)NessusHuawei Local Security Checks
high
144265EulerOS 2.0 SP5 : nss (EulerOS-SA-2020-2572)NessusHuawei Local Security Checks
high
143400EulerOS 2.0 SP9 : nss (EulerOS-SA-2020-2487)NessusHuawei Local Security Checks
critical
143390EulerOS 2.0 SP9 : nss (EulerOS-SA-2020-2500)NessusHuawei Local Security Checks
critical
143254EulerOS 2.0 SP8 : nss (EulerOS-SA-2020-2478)NessusHuawei Local Security Checks
high
142887Fedora 31 : nss (2020-a857113c7a)NessusFedora Local Security Checks
high
142886Fedora 32 : nss (2020-bb91bf9b8e)NessusFedora Local Security Checks
high
142510Fedora 33 : nss (2020-f29254bd5e)NessusFedora Local Security Checks
high