First published: Wed Feb 24 2021(Updated: )
A vulnerability in the network stack of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because the software improperly releases resources when it processes certain IPv6 packets that are destined to an affected device. An attacker could exploit this vulnerability by sending multiple crafted IPv6 packets to an affected device. A successful exploit could cause the network stack to run out of available buffers, impairing operations of control plane and management plane protocols and resulting in a DoS condition. Manual intervention would be required to restore normal operations on the affected device. For more information about the impact of this vulnerability, see the Details section of this advisory.
Credit: ykramarz@cisco.com
Affected Software | Affected Version | How to fix |
---|---|---|
Cisco Unified Computing System | >=4.0<4.0\(4k\) | |
Cisco Unified Computing System | >=4.1<4.1\(1e\) | |
Cisco Ucs 64108 | ||
Cisco Ucs 6454 | ||
Cisco Nx-os | =7.0\(0\)n1\(1\) | |
Cisco Nx-os | =7.0\(1\)n1\(1\) | |
Cisco Nx-os | =7.0\(2\)n1\(1\) | |
Cisco Nx-os | =7.0\(3\)n1\(1\) | |
Cisco Nx-os | =7.0\(4\)n1\(1\) | |
Cisco Nx-os | =7.0\(4\)n1\(1a\) | |
Cisco Nx-os | =7.0\(5\)n1\(1\) | |
Cisco Nx-os | =7.0\(5\)n1\(1a\) | |
Cisco Nx-os | =7.0\(6\)n1\(1\) | |
Cisco Nx-os | =7.0\(6\)n1\(2s\) | |
Cisco Nx-os | =7.0\(6\)n1\(3s\) | |
Cisco Nx-os | =7.0\(6\)n1\(4s\) | |
Cisco Nx-os | =7.0\(7\)n1\(1\) | |
Cisco Nx-os | =7.0\(7\)n1\(1a\) | |
Cisco Nx-os | =7.0\(7\)n1\(1b\) | |
Cisco Nx-os | =7.0\(8\)n1\(1\) | |
Cisco Nx-os | =7.0\(8\)n1\(1a\) | |
Cisco Nx-os | =7.1\(0\)n1\(1\) | |
Cisco Nx-os | =7.1\(0\)n1\(1a\) | |
Cisco Nx-os | =7.1\(0\)n1\(1b\) | |
Cisco Nx-os | =7.1\(1\)n1\(1\) | |
Cisco Nx-os | =7.1\(1\)n1\(1a\) | |
Cisco Nx-os | =7.1\(2\)n1\(1\) | |
Cisco Nx-os | =7.1\(2\)n1\(1a\) | |
Cisco Nx-os | =7.1\(3\)n1\(1\) | |
Cisco Nx-os | =7.1\(3\)n1\(2\) | |
Cisco Nx-os | =7.1\(3\)n1\(2a\) | |
Cisco Nx-os | =7.1\(3\)n1\(3\) | |
Cisco Nx-os | =7.1\(3\)n1\(4\) | |
Cisco Nx-os | =7.1\(3\)n1\(5\) | |
Cisco Nx-os | =7.1\(4\)n1\(1\) | |
Cisco Nx-os | =7.1\(4\)n1\(1a\) | |
Cisco Nx-os | =7.1\(4\)n1\(1c\) | |
Cisco Nx-os | =7.1\(4\)n1\(1d\) | |
Cisco Nx-os | =7.1\(5\)n1\(1\) | |
Cisco Nx-os | =7.1\(5\)n1\(1b\) | |
Cisco Nx-os | =7.2\(0\)n1\(1\) | |
Cisco Nx-os | =7.2\(1\)n1\(1\) | |
Cisco Nx-os | =7.3\(0\)n1\(1\) | |
Cisco Nx-os | =7.3\(0\)n1\(1a\) | |
Cisco Nx-os | =7.3\(0\)n1\(1b\) | |
Cisco Nx-os | =7.3\(1\)n1\(1\) | |
Cisco Nx-os | =7.3\(2\)n1\(1\) | |
Cisco Nx-os | =7.3\(2\)n1\(1b\) | |
Cisco Nx-os | =7.3\(2\)n1\(1c\) | |
Cisco Nx-os | =7.3\(3\)n1\(1\) | |
Cisco Nx-os | =7.3\(4\)n1\(1\) | |
Cisco Nx-os | =7.3\(4\)n1\(1a\) | |
Cisco Nx-os | =7.3\(5\)n1\(1\) | |
Cisco Nx-os | =7.3\(6\)n1\(1\) | |
Cisco Nx-os | =7.3\(6\)n1\(1a\) | |
Cisco Nx-os | =7.3\(7\)n1\(1\) | |
Cisco Nx-os | =7.3\(7\)n1\(1a\) | |
Cisco Nx-os | =7.3\(7\)n1\(1b\) | |
Cisco Nexus 5548p | ||
Cisco Nexus 5548up | ||
Cisco Nexus 5596t | ||
Cisco Nexus 5596up | ||
Cisco Nexus 56128p | ||
Cisco Nexus 5624q | ||
Cisco Nexus 5648q | ||
Cisco Nexus 5672up | ||
Cisco Nexus 5672up-16g | ||
Cisco Nexus 5696q | ||
Cisco Nx-os | =6.0\(2\)a3\(1\) | |
Cisco Nx-os | =6.0\(2\)a3\(2\) | |
Cisco Nx-os | =6.0\(2\)a3\(4\) | |
Cisco Nx-os | =6.0\(2\)a4\(1\) | |
Cisco Nx-os | =6.0\(2\)a4\(2\) | |
Cisco Nx-os | =6.0\(2\)a4\(3\) | |
Cisco Nx-os | =6.0\(2\)a4\(4\) | |
Cisco Nx-os | =6.0\(2\)a4\(5\) | |
Cisco Nx-os | =6.0\(2\)a4\(6\) | |
Cisco Nx-os | =6.0\(2\)a6\(1\) | |
Cisco Nx-os | =6.0\(2\)a6\(1a\) | |
Cisco Nx-os | =6.0\(2\)a6\(2\) | |
Cisco Nx-os | =6.0\(2\)a6\(2a\) | |
Cisco Nx-os | =6.0\(2\)a6\(3\) | |
Cisco Nx-os | =6.0\(2\)a6\(3a\) | |
Cisco Nx-os | =6.0\(2\)a6\(4\) | |
Cisco Nx-os | =6.0\(2\)a6\(4a\) | |
Cisco Nx-os | =6.0\(2\)a6\(5\) | |
Cisco Nx-os | =6.0\(2\)a6\(5a\) | |
Cisco Nx-os | =6.0\(2\)a6\(5b\) | |
Cisco Nx-os | =6.0\(2\)a6\(6\) | |
Cisco Nx-os | =6.0\(2\)a6\(7\) | |
Cisco Nx-os | =6.0\(2\)a6\(8\) | |
Cisco Nx-os | =6.0\(2\)a7\(1\) | |
Cisco Nx-os | =6.0\(2\)a7\(1a\) | |
Cisco Nx-os | =6.0\(2\)a7\(2\) | |
Cisco Nx-os | =6.0\(2\)a7\(2a\) | |
Cisco Nx-os | =6.0\(2\)a8\(1\) | |
Cisco Nx-os | =6.0\(2\)a8\(2\) | |
Cisco Nx-os | =6.0\(2\)a8\(3\) | |
Cisco Nx-os | =6.0\(2\)a8\(4\) | |
Cisco Nx-os | =6.0\(2\)a8\(4a\) | |
Cisco Nx-os | =6.0\(2\)a8\(5\) | |
Cisco Nx-os | =6.0\(2\)a8\(6\) | |
Cisco Nx-os | =6.0\(2\)a8\(7\) | |
Cisco Nx-os | =6.0\(2\)a8\(7a\) | |
Cisco Nx-os | =6.0\(2\)a8\(7b\) | |
Cisco Nx-os | =6.0\(2\)a8\(8\) | |
Cisco Nx-os | =6.0\(2\)a8\(9\) | |
Cisco Nx-os | =6.0\(2\)a8\(10\) | |
Cisco Nx-os | =6.0\(2\)a8\(10a\) | |
Cisco Nx-os | =6.0\(2\)a8\(11\) | |
Cisco Nx-os | =6.0\(2\)a8\(11a\) | |
Cisco Nx-os | =6.0\(2\)a8\(11b\) | |
Cisco Nx-os | =6.0\(2\)u2\(1\) | |
Cisco Nx-os | =6.0\(2\)u2\(2\) | |
Cisco Nx-os | =6.0\(2\)u2\(3\) | |
Cisco Nx-os | =6.0\(2\)u2\(4\) | |
Cisco Nx-os | =6.0\(2\)u2\(5\) | |
Cisco Nx-os | =6.0\(2\)u2\(6\) | |
Cisco Nx-os | =6.0\(2\)u3\(1\) | |
Cisco Nx-os | =6.0\(2\)u3\(2\) | |
Cisco Nx-os | =6.0\(2\)u3\(3\) | |
Cisco Nx-os | =6.0\(2\)u3\(4\) | |
Cisco Nx-os | =6.0\(2\)u3\(5\) | |
Cisco Nx-os | =6.0\(2\)u3\(6\) | |
Cisco Nx-os | =6.0\(2\)u3\(7\) | |
Cisco Nx-os | =6.0\(2\)u3\(8\) | |
Cisco Nx-os | =6.0\(2\)u3\(9\) | |
Cisco Nx-os | =6.0\(2\)u4\(1\) | |
Cisco Nx-os | =6.0\(2\)u4\(2\) | |
Cisco Nx-os | =6.0\(2\)u4\(3\) | |
Cisco Nx-os | =6.0\(2\)u4\(4\) | |
Cisco Nx-os | =6.0\(2\)u5\(1\) | |
Cisco Nx-os | =6.0\(2\)u5\(2\) | |
Cisco Nx-os | =6.0\(2\)u5\(3\) | |
Cisco Nx-os | =6.0\(2\)u5\(4\) | |
Cisco Nx-os | =6.0\(2\)u6\(1\) | |
Cisco Nx-os | =6.0\(2\)u6\(1a\) | |
Cisco Nx-os | =6.0\(2\)u6\(2\) | |
Cisco Nx-os | =6.0\(2\)u6\(2a\) | |
Cisco Nx-os | =6.0\(2\)u6\(3\) | |
Cisco Nx-os | =6.0\(2\)u6\(3a\) | |
Cisco Nx-os | =6.0\(2\)u6\(4\) | |
Cisco Nx-os | =6.0\(2\)u6\(4a\) | |
Cisco Nx-os | =6.0\(2\)u6\(5\) | |
Cisco Nx-os | =6.0\(2\)u6\(5a\) | |
Cisco Nx-os | =6.0\(2\)u6\(5b\) | |
Cisco Nx-os | =6.0\(2\)u6\(5c\) | |
Cisco Nx-os | =6.0\(2\)u6\(6\) | |
Cisco Nx-os | =6.0\(2\)u6\(7\) | |
Cisco Nx-os | =6.0\(2\)u6\(8\) | |
Cisco Nx-os | =6.0\(2\)u6\(9\) | |
Cisco Nx-os | =6.0\(2\)u6\(10\) | |
Cisco Nx-os | =6.0\(2\)u6\(10a\) | |
Cisco Nx-os | =7.0\(3\)f3\(1\) | |
Cisco Nx-os | =7.0\(3\)f3\(2\) | |
Cisco Nx-os | =7.0\(3\)f3\(3\) | |
Cisco Nx-os | =7.0\(3\)f3\(3a\) | |
Cisco Nx-os | =7.0\(3\)f3\(3c\) | |
Cisco Nx-os | =7.0\(3\)f3\(4\) | |
Cisco Nx-os | =7.0\(3\)f3\(5\) | |
Cisco Nx-os | =7.0\(3\)i2\(1\) | |
Cisco Nx-os | =7.0\(3\)i2\(1a\) | |
Cisco Nx-os | =7.0\(3\)i2\(2\) | |
Cisco Nx-os | =7.0\(3\)i2\(2a\) | |
Cisco Nx-os | =7.0\(3\)i2\(2b\) | |
Cisco Nx-os | =7.0\(3\)i2\(2c\) | |
Cisco Nx-os | =7.0\(3\)i2\(2d\) | |
Cisco Nx-os | =7.0\(3\)i2\(2e\) | |
Cisco Nx-os | =7.0\(3\)i2\(2r\) | |
Cisco Nx-os | =7.0\(3\)i2\(2s\) | |
Cisco Nx-os | =7.0\(3\)i2\(2v\) | |
Cisco Nx-os | =7.0\(3\)i2\(2w\) | |
Cisco Nx-os | =7.0\(3\)i2\(2x\) | |
Cisco Nx-os | =7.0\(3\)i2\(2y\) | |
Cisco Nx-os | =7.0\(3\)i2\(3\) | |
Cisco Nx-os | =7.0\(3\)i2\(4\) | |
Cisco Nx-os | =7.0\(3\)i2\(5\) | |
Cisco Nx-os | =7.0\(3\)i3\(1\) | |
Cisco Nx-os | =7.0\(3\)i4\(1\) | |
Cisco Nx-os | =7.0\(3\)i4\(1t\) | |
Cisco Nx-os | =7.0\(3\)i4\(2\) | |
Cisco Nx-os | =7.0\(3\)i4\(3\) | |
Cisco Nx-os | =7.0\(3\)i4\(4\) | |
Cisco Nx-os | =7.0\(3\)i4\(5\) | |
Cisco Nx-os | =7.0\(3\)i4\(6\) | |
Cisco Nx-os | =7.0\(3\)i4\(6t\) | |
Cisco Nx-os | =7.0\(3\)i4\(7\) | |
Cisco Nx-os | =7.0\(3\)i4\(8\) | |
Cisco Nx-os | =7.0\(3\)i4\(8a\) | |
Cisco Nx-os | =7.0\(3\)i4\(8b\) | |
Cisco Nx-os | =7.0\(3\)i4\(8z\) | |
Cisco Nx-os | =7.0\(3\)i4\(9\) | |
Cisco Nx-os | =7.0\(3\)i5\(1\) | |
Cisco Nx-os | =7.0\(3\)i5\(2\) | |
Cisco Nx-os | =7.0\(3\)i5\(3\) | |
Cisco Nx-os | =7.0\(3\)i5\(3a\) | |
Cisco Nx-os | =7.0\(3\)i5\(3b\) | |
Cisco Nx-os | =7.0\(3\)i6\(1\) | |
Cisco Nx-os | =7.0\(3\)i6\(2\) | |
Cisco Nx-os | =7.0\(3\)i7\(1\) | |
Cisco Nx-os | =7.0\(3\)i7\(2\) | |
Cisco Nx-os | =7.0\(3\)i7\(3\) | |
Cisco Nx-os | =7.0\(3\)i7\(3z\) | |
Cisco Nx-os | =7.0\(3\)i7\(4\) | |
Cisco Nx-os | =7.0\(3\)i7\(5\) | |
Cisco Nx-os | =7.0\(3\)i7\(5a\) | |
Cisco Nx-os | =7.0\(3\)i7\(6\) | |
Cisco Nx-os | =7.0\(3\)i7\(6z\) | |
Cisco Nx-os | =7.0\(3\)i7\(7\) | |
Cisco Nx-os | =7.0\(3\)i7\(8\) | |
Cisco Nx-os | =7.0\(3\)ic4\(4\) | |
Cisco Nx-os | =7.0\(3\)im7\(2\) | |
Cisco Nexus 3016 | ||
Cisco Nexus 3016q | ||
Cisco Nexus 3048 | ||
Cisco Nexus 3064 | ||
Cisco Nexus 3064-32t | ||
Cisco Nexus 3064-t | ||
Cisco Nexus 3064-x | ||
Cisco Nexus 3064t | ||
Cisco Nexus 3064x | ||
Cisco Nexus 3100-v | ||
Cisco Nexus 3100-z | ||
Cisco Nexus 3100v | ||
Cisco Nexus 31108pc-v | ||
Cisco Nexus 31108pv-v | ||
Cisco Nexus 31108tc-v | ||
Cisco Nexus 31128pq | ||
Cisco Nexus 3132c-z | ||
Cisco Nexus 3132q | ||
Cisco Nexus 3132q-v | ||
Cisco Nexus 3132q-x | ||
Cisco Nexus 3132q-xl | ||
Cisco Nexus 3164q | ||
Cisco Nexus 3172 | ||
Cisco Nexus 3172pq | ||
Cisco Nexus 3172pq-xl | ||
Cisco Nexus 3172tq | ||
Cisco Nexus 3172tq-32t | ||
Cisco Nexus 3172tq-xl | ||
Cisco Nexus 3232c | ||
Cisco Nexus 3264c-e | ||
Cisco Nexus 3264q | ||
Cisco Nexus 3408-s | ||
Cisco Nexus 34180yc | ||
Cisco Nexus 34200yc-sm | ||
Cisco Nexus 3432d-s | ||
Cisco Nexus 3464c | ||
Cisco Nexus 3524 | ||
Cisco Nexus 3524-x | ||
Cisco Nexus 3524-xl | ||
Cisco Nexus 3548 | ||
Cisco Nexus 3548-x | ||
Cisco Nexus 3548-xl | ||
Cisco Nexus 36180yc-r | ||
Cisco Nexus 3636c-r | ||
Cisco Nexus 6001 | ||
Cisco Nexus 6001p | ||
Cisco Nexus 6001t | ||
Cisco Nexus 6004 | ||
Cisco Nexus 6004x | ||
Cisco Nx-os | =7.2\(0\)d1\(1\) | |
Cisco Nx-os | =7.2\(1\)d1\(1\) | |
Cisco Nx-os | =7.2\(2\)d1\(1\) | |
Cisco Nx-os | =7.2\(2\)d1\(2\) | |
Cisco Nx-os | =7.2\(2\)d1\(3\) | |
Cisco Nx-os | =7.2\(2\)d1\(4\) | |
Cisco Nx-os | =7.3\(0\)d1\(1\) | |
Cisco Nx-os | =7.3\(0\)dx\(1\) | |
Cisco Nx-os | =7.3\(1\)d1\(1\) | |
Cisco Nx-os | =7.3\(2\)d1\(1\) | |
Cisco Nx-os | =7.3\(2\)d1\(1d\) | |
Cisco Nx-os | =7.3\(2\)d1\(2\) | |
Cisco Nx-os | =7.3\(2\)d1\(3\) | |
Cisco Nx-os | =7.3\(2\)d1\(3a\) | |
Cisco Nx-os | =7.3\(3\)d1\(1\) | |
Cisco Nx-os | =7.3\(4\)d1\(1\) | |
Cisco Nx-os | =7.3\(5\)d1\(1\) | |
Cisco Nx-os | =7.3\(6\)d1\(1\) | |
Cisco Nx-os | =8.0\(1\) | |
Cisco Nx-os | =8.1\(1\) | |
Cisco Nx-os | =8.1\(2\) | |
Cisco Nx-os | =8.1\(2a\) | |
Cisco Nx-os | =8.2\(1\) | |
Cisco Nx-os | =8.2\(2\) | |
Cisco Nx-os | =8.2\(3\) | |
Cisco Nx-os | =8.2\(4\) | |
Cisco Nx-os | =8.2\(5\) | |
Cisco Nx-os | =8.3\(1\) | |
Cisco Nx-os | =8.3\(2\) | |
Cisco Nx-os | =8.4\(1\) | |
Cisco Nx-os | =8.4\(2\) | |
Cisco Nexus 7000 | ||
Cisco Nexus 7004 | ||
Cisco Nexus 7009 | ||
Cisco Nexus 7010 | ||
Cisco Nexus 7018 | ||
Cisco Nexus 7700 | ||
Cisco Nexus 7702 | ||
Cisco Nexus 7706 | ||
Cisco Nexus 7710 | ||
Cisco Nexus 7718 | ||
Cisco Nx-os | =7.0\(3\)f1\(1\) | |
Cisco Nx-os | =7.0\(3\)f2\(1\) | |
Cisco Nx-os | =7.0\(3\)f2\(2\) | |
Cisco Nx-os | =7.0\(3\)ia7\(1\) | |
Cisco Nx-os | =7.0\(3\)ia7\(2\) | |
Cisco Nx-os | =7.0\(3\)im3\(1\) | |
Cisco Nx-os | =7.0\(3\)im3\(2\) | |
Cisco Nx-os | =7.0\(3\)im3\(2a\) | |
Cisco Nx-os | =7.0\(3\)im3\(2b\) | |
Cisco Nx-os | =7.0\(3\)im3\(3\) | |
Cisco Nexus 9000v | ||
Cisco Nexus 92160yc-x | ||
Cisco Nexus 92160yc Switch | ||
Cisco Nexus 9221c | ||
Cisco Nexus 92300yc | ||
Cisco Nexus 92304qc | ||
Cisco Nexus 92348gc-x | ||
Cisco Nexus 9236c | ||
Cisco Nexus 9272q | ||
Cisco Nexus 93108tc-ex | ||
Cisco Nexus 93108tc-ex-24 | ||
Cisco Nexus 93108tc-fx | ||
Cisco Nexus 93108tc-fx-24 | ||
Cisco Nexus 93108tc-fx3p | ||
Cisco Nexus 93120tx | ||
Cisco Nexus 93128 | ||
Cisco Nexus 93128tx | ||
Cisco Nexus 9316d-gx | ||
Cisco Nexus 93180lc-ex | ||
Cisco Nexus 93180tc-ex | ||
Cisco Nexus 93180yc-ex | ||
Cisco Nexus 93180yc-ex-24 | ||
Cisco Nexus 93180yc-fx | ||
Cisco Nexus 93180yc-fx-24 | ||
Cisco Nexus 93180yc-fx3 | ||
Cisco Nexus 93180yc-fx3s | ||
Cisco Nexus 93216tc-fx2 | ||
Cisco Nexus 93240yc-fx2 | ||
Cisco Nexus 9332c | ||
Cisco Nexus 9332pq | ||
Cisco Nexus 93360yc-fx2 | ||
Cisco Nexus 9336c-fx2 | ||
Cisco Nexus 9336c-fx2-e | ||
Cisco Nexus 9336pq | ||
Cisco Nexus 9348gc-fxp | ||
Cisco Nexus 93600cd-gx | ||
Cisco Nexus 9364c | ||
Cisco Nexus 9364c-gx | ||
Cisco Nexus 9372px | ||
Cisco Nexus 9372px-e | ||
Cisco Nexus 9372tx | ||
Cisco Nexus 9372tx-e | ||
Cisco Nexus 9396px | ||
Cisco Nexus 9396tx | ||
Cisco Nexus 9500r | ||
Cisco Nexus 9504 | ||
Cisco Nexus 9508 | ||
Cisco Nexus 9516 |
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