Arista EOS Dataplane Denial of Service via Malformed IPsec Packet
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arista Networks | EOS | unaffected |
|
No data.
No data.
| Vendor | Product | Versions | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Arista | Eos |
|
Vendor Solution
The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release that contains all the fixes listed below. For more information about upgrading see https://www.arista.com/en/support/toi/tcam-profile?pn=ipsec-egress-padding-removal . This may momentarily impact traffic. Apply the configuration found at the url to create a TCAM profile and then apply the TCAM profile as shown below. switch(config)#hardware tcam switch(config-tcam)#system profile ipsec-egress-padding-removal ! WARNING! Changing TCAM profile will cause forwarding agent(s) to exit and restart. All traffic through the forwarding chip managed by the restarting forwarding agent will be dropped. Proceed [y/n]y switch(config-tcam)# To ensure the TCAM profile has been applied, run the following command and verify the Configuration and Status values match ipsec-egress-padding-removal: switch(config-tcam)#show hardware tcam profile Configuration Status FixedSystem ipsec-egress-padding-removal ipsec-egress-padding-removal ‘ipsec-egress-padding-removal’ differs from the ‘ipsec’ TCAM profile in two ways: * Egress IP ACLs are disabled * Fixes for BUG603398 and BUG1246592 are applied
Vendor Workaround
There are no mitigations for this vulnerability.
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.386% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Arista
Arista eos |
|
| Vendors & Products |
Arista
Arista eos |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | On affected platforms running Arista EOS with IPsec configured, a specially crafted packet can cause the dataplane to stop processing all IPsec traffic. The control plane may detect this condition, and attempt to reset the IPsec processing pipeline. After reset traffic may not resume being processed. There is no impact to non-IPsec traffic or to IPsec traffic not originating or terminating on the system. This issue was reported by an Arista customer. | |
| Title | Arista EOS Dataplane Denial of Service via Malformed IPsec Packet | |
| Weaknesses | CWE-1286 | |
| References |
| |
| Metrics |
cvssV3_1
|