5.8

CVE-2021-1229

A vulnerability in ICMP Version 6 (ICMPv6) processing in Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a slow system memory leak, which over time could lead to a denial of service (DoS) condition. This vulnerability is due to improper error handling when an IPv6-configured interface receives a specific type of ICMPv6 packet. An attacker could exploit this vulnerability by sending a sustained rate of crafted ICMPv6 packets to a local IPv6 address on a targeted device. A successful exploit could allow the attacker to cause a system memory leak in the ICMPv6 process on the device. As a result, the ICMPv6 process could run out of system memory and stop processing traffic. The device could then drop all ICMPv6 packets, causing traffic instability on the device. Restoring device functionality would require a device reboot.

Data is provided by the National Vulnerability Database (NVD)
Cisco ≫ Nx-os Version8.4(3.53)
   Cisco ≫ Mds 9148s Version-
   Cisco ≫ Mds 9250i Version-
   Cisco ≫ Mds 9706 Version-
   Cisco ≫ Mds 9710 Version-
   Cisco ≫ Nexus 3048 Version-
   Cisco ≫ Nexus 31108pv-v Version-
   Cisco ≫ Nexus 31108tc-v Version-
   Cisco ≫ Nexus 31128pq Version-
   Cisco ≫ Nexus 3132c-z Version-
   Cisco ≫ Nexus 3132q-v Version-
   Cisco ≫ Nexus 3132q-x Version-
   Cisco ≫ Nexus 3132q-xl Version-
   Cisco ≫ Nexus 3164q Version-
   Cisco ≫ Nexus 3172pq Version-
   Cisco ≫ Nexus 3172pq-xl Version-
   Cisco ≫ Nexus 3232c Version-
   Cisco ≫ Nexus 3264c-e Version-
   Cisco ≫ Nexus 3264q Version-
   Cisco ≫ Nexus 3408-s Version-
   Cisco ≫ Nexus 34180yc Version-
   Cisco ≫ Nexus 3432d-s Version-
   Cisco ≫ Nexus 3464c Version-
   Cisco ≫ Nexus 3524-x Version-
   Cisco ≫ Nexus 3524-xl Version-
   Cisco ≫ Nexus 3548-x Version-
   Cisco ≫ Nexus 3548-xl Version-
   Cisco ≫ Nexus 36180yc-r Version-
   Cisco ≫ Nexus 3636c-r Version-
   Cisco ≫ Nexus 5548p Version-
   Cisco ≫ Nexus 5548up Version-
   Cisco ≫ Nexus 5596t Version-
   Cisco ≫ Nexus 5596up Version-
   Cisco ≫ Nexus 56128p Version-
   Cisco ≫ Nexus 5624q Version-
   Cisco ≫ Nexus 5648q Version-
   Cisco ≫ Nexus 5672up Version-
   Cisco ≫ Nexus 5672up-16g Version-
   Cisco ≫ Nexus 5696q Version-
   Cisco ≫ Nexus 6001 Version-
   Cisco ≫ Nexus 6004 Version-
   Cisco ≫ Nexus 7000 Version-
   Cisco ≫ Nexus 7700 Version-
   Cisco ≫ Nexus 9000v Version-
   Cisco ≫ Nexus 92160yc-x Version-
   Cisco ≫ Nexus 9221c Version-
   Cisco ≫ Nexus 92300yc Version-
   Cisco ≫ Nexus 92304qc Version-
   Cisco ≫ Nexus 92348gc-x Version-
   Cisco ≫ Nexus 9236c Version-
   Cisco ≫ Nexus 9272q Version-
   Cisco ≫ Nexus 93108tc-ex Version-
   Cisco ≫ Nexus 93108tc-ex-24 Version-
   Cisco ≫ Nexus 93108tc-fx Version-
   Cisco ≫ Nexus 93108tc-fx-24 Version-
   Cisco ≫ Nexus 93120tx Version-
   Cisco ≫ Nexus 93128tx Version-
   Cisco ≫ Nexus 9316d-gx Version-
   Cisco ≫ Nexus 93180lc-ex Version-
   Cisco ≫ Nexus 93180yc-ex Version-
   Cisco ≫ Nexus 93180yc-ex-24 Version-
   Cisco ≫ Nexus 93180yc-fx Version-
   Cisco ≫ Nexus 93180yc-fx-24 Version-
   Cisco ≫ Nexus 93180yc-fx3 Version-
   Cisco ≫ Nexus 93180yc-fx3s Version-
   Cisco ≫ Nexus 93216tc-fx2 Version-
   Cisco ≫ Nexus 93240yc-fx2 Version-
   Cisco ≫ Nexus 9332pq Version-
   Cisco ≫ Nexus 93360yc-fx2 Version-
   Cisco ≫ Nexus 9336c-fx2 Version-
   Cisco ≫ Nexus 9336c-fx2-e Version-
   Cisco ≫ Nexus 9336pq Version-
   Cisco ≫ Nexus 9348gc-fxp Version-
   Cisco ≫ Nexus 93600cd-gx Version-
   Cisco ≫ Nexus 9364c Version-
   Cisco ≫ Nexus 9364c-gx Version-
   Cisco ≫ Nexus 9372px Version-
   Cisco ≫ Nexus 9372px-e Version-
   Cisco ≫ Nexus 9372tx Version-
   Cisco ≫ Nexus 9372tx-e Version-
   Cisco ≫ Nexus 9396px Version-
   Cisco ≫ Nexus 9396tx Version-
   Cisco ≫ Nexus 9508 Version-
Cisco ≫ Nx-os Version15.1(2.31)
   Cisco ≫ Nexus 9000v Version-
   Cisco ≫ Nexus 92160yc-x Version-
   Cisco ≫ Nexus 9221c Version-
   Cisco ≫ Nexus 92300yc Version-
   Cisco ≫ Nexus 92304qc Version-
   Cisco ≫ Nexus 92348gc-x Version-
   Cisco ≫ Nexus 9236c Version-
   Cisco ≫ Nexus 9272q Version-
   Cisco ≫ Nexus 93108tc-ex Version-
   Cisco ≫ Nexus 93108tc-ex-24 Version-
   Cisco ≫ Nexus 93108tc-fx Version-
   Cisco ≫ Nexus 93108tc-fx-24 Version-
   Cisco ≫ Nexus 93120tx Version-
   Cisco ≫ Nexus 93128tx Version-
   Cisco ≫ Nexus 9316d-gx Version-
   Cisco ≫ Nexus 93180lc-ex Version-
   Cisco ≫ Nexus 93180yc-ex Version-
   Cisco ≫ Nexus 93180yc-ex-24 Version-
   Cisco ≫ Nexus 93180yc-fx Version-
   Cisco ≫ Nexus 93180yc-fx-24 Version-
   Cisco ≫ Nexus 93180yc-fx3 Version-
   Cisco ≫ Nexus 93180yc-fx3s Version-
   Cisco ≫ Nexus 93216tc-fx2 Version-
   Cisco ≫ Nexus 93240yc-fx2 Version-
   Cisco ≫ Nexus 9332pq Version-
   Cisco ≫ Nexus 93360yc-fx2 Version-
   Cisco ≫ Nexus 9336c-fx2 Version-
   Cisco ≫ Nexus 9336c-fx2-e Version-
   Cisco ≫ Nexus 9336pq Version-
   Cisco ≫ Nexus 9348gc-fxp Version-
   Cisco ≫ Nexus 93600cd-gx Version-
   Cisco ≫ Nexus 9364c Version-
   Cisco ≫ Nexus 9364c-gx Version-
   Cisco ≫ Nexus 9372px Version-
   Cisco ≫ Nexus 9372px-e Version-
   Cisco ≫ Nexus 9372tx Version-
   Cisco ≫ Nexus 9372tx-e Version-
   Cisco ≫ Nexus 9396px Version-
   Cisco ≫ Nexus 9396tx Version-
   Cisco ≫ Nexus 9508 Version-
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.98% 0.748
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
nvd@nist.gov 4.3 8.6 2.9
AV:N/AC:M/Au:N/C:N/I:N/A:P
psirt@cisco.com 5.8 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
CWE-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.