CVE-2020-3284

Summary

CVECVE-2020-3284
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-11-06 19:15:00 UTC
Updated2021-01-05 18:56:00 UTC
DescriptionA vulnerability in the enhanced Preboot eXecution Environment (PXE) boot loader for Cisco IOS XR 64-bit Software could allow an unauthenticated, remote attacker to execute unsigned code during the PXE boot process on an affected device. The PXE boot loader is part of the BIOS and runs over the management interface of hardware platforms that are running Cisco IOS XR Software only. The vulnerability exists because internal commands that are issued when the PXE network boot process is loading a software image are not properly verified. An attacker could exploit this vulnerability by compromising the PXE boot server and replacing a valid software image with a malicious one. Alternatively, the attacker could impersonate the PXE boot server and send a PXE boot reply with a malicious file. A successful exploit could allow the attacker to execute unsigned code on the affected device. Note: To fix this vulnerability, both the Cisco IOS XR Software and the BIOS must be upgraded. The BIOS code is included in Cisco IOS XR Software but might require additional installation steps. For further information, see the Fixed Software section of this advisory.

Risk And Classification

Problem Types: NVD-CWE-noinfo

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Cisco A99-rp2-se - All All All
Hardware Cisco A99-rp2-se - All All All
Operating System Cisco A99-rp2-se Firmware All All All All
Operating System Cisco A99-rp2-se Firmware All All All All
Hardware Cisco A99-rp2-tr - All All All
Hardware Cisco A99-rp2-tr - All All All
Operating System Cisco A99-rp2-tr Firmware All All All All
Operating System Cisco A99-rp2-tr Firmware All All All All
Hardware Cisco A99-rp3-se - All All All
Hardware Cisco A99-rp3-se - All All All
Operating System Cisco A99-rp3-se Firmware All All All All
Operating System Cisco A99-rp3-se Firmware All All All All
Hardware Cisco A99-rp3-tr - All All All
Hardware Cisco A99-rp3-tr - All All All
Operating System Cisco A99-rp3-tr Firmware All All All All
Operating System Cisco A99-rp3-tr Firmware All All All All
Hardware Cisco A99-rsp-se - All All All
Hardware Cisco A99-rsp-se - All All All
Operating System Cisco A99-rsp-se Firmware All All All All
Operating System Cisco A99-rsp-se Firmware All All All All
Hardware Cisco A99-rsp-tr - All All All
Hardware Cisco A99-rsp-tr - All All All
Operating System Cisco A99-rsp-tr Firmware All All All All
Operating System Cisco A99-rsp-tr Firmware All All All All
Hardware Cisco A9k-rsp5-se - All All All
Hardware Cisco A9k-rsp5-se - All All All
Operating System Cisco A9k-rsp5-se Firmware All All All All
Operating System Cisco A9k-rsp5-se Firmware All All All All
Hardware Cisco A9k-rsp5-tr - All All All
Hardware Cisco A9k-rsp5-tr - All All All
Operating System Cisco A9k-rsp5-tr Firmware All All All All
Operating System Cisco A9k-rsp5-tr Firmware All All All All
Hardware Cisco A9k-rsp880-lt-se - All All All
Hardware Cisco A9k-rsp880-lt-se - All All All
Operating System Cisco A9k-rsp880-lt-se Firmware All All All All
Operating System Cisco A9k-rsp880-lt-se Firmware All All All All
Hardware Cisco A9k-rsp880-lt-tr - All All All
Hardware Cisco A9k-rsp880-lt-tr - All All All
Operating System Cisco A9k-rsp880-lt-tr Firmware All All All All
Operating System Cisco A9k-rsp880-lt-tr Firmware All All All All
Hardware Cisco A9k-rsp880-se - All All All
Hardware Cisco A9k-rsp880-se - All All All
Operating System Cisco A9k-rsp880-se Firmware All All All All
Operating System Cisco A9k-rsp880-se Firmware All All All All
Hardware Cisco A9k-rsp880-tr - All All All
Hardware Cisco A9k-rsp880-tr - All All All
Operating System Cisco A9k-rsp880-tr Firmware All All All All
Operating System Cisco A9k-rsp880-tr Firmware All All All All
Hardware Cisco Asr-9901-rp - All All All
Hardware Cisco Asr-9901-rp - All All All
Operating System Cisco Asr-9901-rp Firmware All All All All
Operating System Cisco Asr-9901-rp Firmware All All All All
Operating System Cisco Ios Xr All All All All
Operating System Cisco Ios Xr All All All All
Hardware Cisco N540-12z20g-sys-a/d - All All All
Hardware Cisco N540-12z20g-sys-a/d - All All All
Operating System Cisco N540-12z20g-sys-a/d Firmware All All All All
Operating System Cisco N540-12z20g-sys-a/d Firmware All All All All
Hardware Cisco N540-24z8q2c-m - All All All
Hardware Cisco N540-24z8q2c-m - All All All
Operating System Cisco N540-24z8q2c-m Firmware All All All All
Operating System Cisco N540-24z8q2c-m Firmware All All All All
Hardware Cisco N540-28z4c-sys-a/d - All All All
Hardware Cisco N540-28z4c-sys-a/d - All All All
Operating System Cisco N540-28z4c-sys-a/d Firmware All All All All
Operating System Cisco N540-28z4c-sys-a/d Firmware All All All All
Hardware Cisco N540-acc-sys - All All All
Hardware Cisco N540-acc-sys - All All All
Operating System Cisco N540-acc-sys Firmware All All All All
Operating System Cisco N540-acc-sys Firmware All All All All
Hardware Cisco N540x-12z16g-sys-a/d - All All All
Hardware Cisco N540x-12z16g-sys-a/d - All All All
Operating System Cisco N540x-12z16g-sys-a/d Firmware All All All All
Operating System Cisco N540x-12z16g-sys-a/d Firmware All All All All
Hardware Cisco N540x-16z4g8q2c-a/d - All All All
Hardware Cisco N540x-16z4g8q2c-a/d - All All All
Operating System Cisco N540x-16z4g8q2c-a/d Firmware All All All All
Operating System Cisco N540x-16z4g8q2c-a/d Firmware All All All All
Hardware Cisco N560-4-sys - All All All
Hardware Cisco N560-4-sys - All All All
Operating System Cisco N560-4-sys Firmware All All All All
Operating System Cisco N560-4-sys Firmware All All All All
Hardware Cisco N560-7-sys - All All All
Hardware Cisco N560-7-sys - All All All
Operating System Cisco N560-7-sys Firmware All All All All
Operating System Cisco N560-7-sys Firmware All All All All
Hardware Cisco Nc55-rp - All All All
Hardware Cisco Nc55-rp - All All All
Hardware Cisco Nc55-rp-e - All All All
Hardware Cisco Nc55-rp-e - All All All
Operating System Cisco Nc55-rp-e Firmware All All All All
Operating System Cisco Nc55-rp-e Firmware All All All All
Operating System Cisco Nc55-rp Firmware All All All All
Operating System Cisco Nc55-rp Firmware All All All All
Hardware Cisco Ncs-5501 - All All All
Hardware Cisco Ncs-5501 - All All All
Hardware Cisco Ncs-5501-se - All All All
Hardware Cisco Ncs-5501-se - All All All
Operating System Cisco Ncs-5501-se Firmware All All All All
Operating System Cisco Ncs-5501-se Firmware All All All All
Operating System Cisco Ncs-5501 Firmware All All All All
Operating System Cisco Ncs-5501 Firmware All All All All
Hardware Cisco Ncs-5502 - All All All
Hardware Cisco Ncs-5502 - All All All
Hardware Cisco Ncs-5502-se - All All All
Hardware Cisco Ncs-5502-se - All All All
Operating System Cisco Ncs-5502-se Firmware All All All All
Operating System Cisco Ncs-5502-se Firmware All All All All
Operating System Cisco Ncs-5502 Firmware All All All All
Operating System Cisco Ncs-5502 Firmware All All All All
Hardware Cisco Ncs-55a1-24h - All All All
Hardware Cisco Ncs-55a1-24h - All All All
Operating System Cisco Ncs-55a1-24h Firmware All All All All
Operating System Cisco Ncs-55a1-24h Firmware All All All All
Hardware Cisco Ncs-55a1-24q6h-s - All All All
Hardware Cisco Ncs-55a1-24q6h-s - All All All
Operating System Cisco Ncs-55a1-24q6h-s Firmware All All All All
Operating System Cisco Ncs-55a1-24q6h-s Firmware All All All All
Hardware Cisco Ncs-55a1-36h-s - All All All
Hardware Cisco Ncs-55a1-36h-s - All All All
Hardware Cisco Ncs-55a1-36h-se-s - All All All
Hardware Cisco Ncs-55a1-36h-se-s - All All All
Operating System Cisco Ncs-55a1-36h-se-s Firmware All All All All
Operating System Cisco Ncs-55a1-36h-se-s Firmware All All All All
Operating System Cisco Ncs-55a1-36h-s Firmware All All All All
Operating System Cisco Ncs-55a1-36h-s Firmware All All All All
Hardware Cisco Ncs-55a2-mod-hd-s - All All All
Hardware Cisco Ncs-55a2-mod-hd-s - All All All
Operating System Cisco Ncs-55a2-mod-hd-s Firmware All All All All
Operating System Cisco Ncs-55a2-mod-hd-s Firmware All All All All
Hardware Cisco Ncs-55a2-mod-hx-s - All All All
Hardware Cisco Ncs-55a2-mod-hx-s - All All All
Operating System Cisco Ncs-55a2-mod-hx-s Firmware All All All All
Operating System Cisco Ncs-55a2-mod-hx-s Firmware All All All All
Hardware Cisco Ncs-55a2-mod-s - All All All
Hardware Cisco Ncs-55a2-mod-s - All All All
Hardware Cisco Ncs-55a2-mod-se-h-s - All All All
Hardware Cisco Ncs-55a2-mod-se-h-s - All All All
Operating System Cisco Ncs-55a2-mod-se-h-s Firmware All All All All
Operating System Cisco Ncs-55a2-mod-se-h-s Firmware All All All All
Hardware Cisco Ncs-55a2-mod-se-s - All All All
Hardware Cisco Ncs-55a2-mod-se-s - All All All
Operating System Cisco Ncs-55a2-mod-se-s Firmware All All All All
Operating System Cisco Ncs-55a2-mod-se-s Firmware All All All All
Operating System Cisco Ncs-55a2-mod-s Firmware All All All All
Operating System Cisco Ncs-55a2-mod-s Firmware All All All All
Hardware Cisco Ncs1001 - All All All
Hardware Cisco Ncs1001 - All All All
Operating System Cisco Ncs1001 Firmware All All All All
Operating System Cisco Ncs1001 Firmware All All All All
Hardware Cisco Ncs1002 - All All All
Hardware Cisco Ncs1002 - All All All
Operating System Cisco Ncs1002 Firmware All All All All
Operating System Cisco Ncs1002 Firmware All All All All
Hardware Cisco Ncs1004 - All All All
Hardware Cisco Ncs1004 - All All All
Operating System Cisco Ncs1004 Firmware All All All All
Operating System Cisco Ncs1004 Firmware All All All All
Hardware Cisco Ncs5001 - All All All
Hardware Cisco Ncs5001 - All All All
Operating System Cisco Ncs5001 Firmware All All All All
Operating System Cisco Ncs5001 Firmware All All All All
Hardware Cisco Ncs5002 - All All All
Hardware Cisco Ncs5002 - All All All
Operating System Cisco Ncs5002 Firmware All All All All
Operating System Cisco Ncs5002 Firmware All All All All
Hardware Cisco Ncs5011 - All All All
Hardware Cisco Ncs5011 - All All All
Operating System Cisco Ncs5011 Firmware All All All All
Operating System Cisco Ncs5011 Firmware All All All All
Hardware Cisco Ncs55-a1-48q6h - All All All
Hardware Cisco Ncs55-a1-48q6h - All All All
Operating System Cisco Ncs55-a1-48q6h Firmware All All All All
Operating System Cisco Ncs55-a1-48q6h Firmware All All All All

References

ReferenceSourceLinkTags
Cisco IOS XR Software Enhanced Preboot eXecution Environment Unsigned Code Execution Vulnerability CISCO tools.cisco.com Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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