CVE-2021-1440

Description

A vulnerability in the implementation of the Resource Public Key Infrastructure (RPKI) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause the Border Gateway Protocol (BGP) process to crash, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of a specific RPKI to Router (RTR) Protocol packet header. An attacker could exploit this vulnerability by compromising the RPKI validator server and sending a specifically crafted RTR packet to an affected device. Alternatively, the attacker could use man-in-the-middle techniques to impersonate the RPKI validator server and send a specifically crafted RTR response packet over the established RTR TCP connection to the affected device. A successful exploit could allow the attacker to cause a DoS condition because the BGP process could constantly restart and BGP routing could become unstable.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2021 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see .

Reserved 2020-11-13 | Published 2024-11-18 | Updated 2024-11-18 | Assigner cisco

Problem types

Reachable Assertion

Product status

Default status
unknown

6.6.1
affected

6.5.3
affected

7.0.1
affected

6.6.11
affected

6.5.1
affected

6.5.2
affected

6.6.2
affected

6.6.12
affected

6.6.25
affected

7.1.1
affected

7.0.90
affected

6.6.3
affected

7.0.2
affected

7.1.2
affected

7.2.1
affected

7.0.11
affected

7.0.12
affected

7.0.14
affected

6.6.4
affected

7.2.12
affected

7.2.2
affected

References

sec.cloudapps.cisco.com/.../cisco-sa-xrbgp-rpki-dos-gvmjqxbk (cisco-sa-xrbgp-rpki-dos-gvmjqxbk)

sec.cloudapps.cisco.com/...isco-sa-asaftd-xss-webui-gQLSFyPM (https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-xss-webui-gQLSFyPM</a></p><p>This advisory is part of the October 2021 release of the Cisco&nbsp;ASA, FTD, and FMC Security Advisory Bundled publication. For a complete list of the advisories and links to them, see <a href="https://sec.cloudapps.cisco.com/security/center/viewErp.x?alertId=ERP-74773">Cisco&nbsp;Event Response: October 2021 Cisco&nbsp;ASA, FMC, and FTD Software Security Advisory Bundled Publication)

sec.cloudapps.cisco.com/...co-sa-sdwan-sigverbypass-gPYXd6Mk

sec.cloudapps.cisco.com/...o-sa-esa-sma-info-disclo-VOu2GHbZ

cve.org (CVE-2021-1440)

nvd.nist.gov (CVE-2021-1440)

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