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THREATINT
PUBLISHED

CVE-2022-20846

Cisco IOS XR Software Cisco Discovery Protocol Buffer Overflow Vulnerability



Description

A vulnerability in the Cisco Discovery Protocol implementation for Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the Cisco Discovery Protocol process to reload on an affected device. This vulnerability is due to a heap buffer overflow in certain Cisco Discovery Protocol messages. An attacker could exploit this vulnerability by sending a malicious Cisco Discovery Protocol packet to an affected device. A successful exploit could allow the attacker to cause a heap overflow, which could cause the Cisco Discovery Protocol process to reload on the device. The bytes that can be written in the buffer overflow are restricted, which limits remote code execution.Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent).  Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see .

Reserved 2021-11-02 | Published 2024-11-15 | Updated 2024-11-15 | Assigner cisco


MEDIUM: 4.3CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Problem types

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Product status

Default status
unknown

6.5.3
affected

6.5.29
affected

6.5.1
affected

6.6.1
affected

6.5.2
affected

6.5.92
affected

6.5.15
affected

6.6.2
affected

7.0.1
affected

6.6.25
affected

6.5.26
affected

6.6.11
affected

6.5.25
affected

6.5.28
affected

6.5.93
affected

6.6.12
affected

6.5.90
affected

7.0.0
affected

7.1.1
affected

7.0.90
affected

6.6.3
affected

6.7.1
affected

7.0.2
affected

7.1.15
affected

7.2.0
affected

7.2.1
affected

7.1.2
affected

6.7.2
affected

7.0.11
affected

7.0.12
affected

7.0.14
affected

7.1.25
affected

6.6.4
affected

7.2.12
affected

7.3.1
affected

7.1.3
affected

6.7.3
affected

7.4.1
affected

7.2.2
affected

6.7.4
affected

6.5.31
affected

7.3.15
affected

7.3.16
affected

6.8.1
affected

7.4.15
affected

6.5.32
affected

7.3.2
affected

7.5.1
affected

7.4.16
affected

7.3.27
affected

7.6.1
affected

7.5.2
affected

7.6.15
affected

7.5.12
affected

7.3.3
affected

6.8.2
affected

7.3.4
affected

7.4.2
affected

6.7.35
affected

6.9.1
affected

References

sec.cloudapps.cisco.com/...Advisory/cisco-sa-xr-cdp-wnALzvT2 (cisco-sa-xr-cdp-wnALzvT2)

sec.cloudapps.cisco.com/...visory/cisco-sa-iosxr-bng-Gmg5Gxt (https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt</a></p><p>This advisory is part of the September 2022 release of the Cisco&nbsp;IOS XR Software 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-74840">Cisco&nbsp;Event Response: September 2022 Semiannual Cisco&nbsp;IOS XR Software Security Advisory Bundled Publication)

sec.cloudapps.cisco.com/...visory/cisco-sa-ncs4k-tl1-GNnLwC6 (https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncs4k-tl1-GNnLwC6</a></p><p>This advisory is part of the September 2022 release of the Cisco&nbsp;IOS XR Software 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-74840">Cisco&nbsp;Event Response: September 2022 Semiannual Cisco&nbsp;IOS XR Software Security Advisory Bundled Publication)

cve.org (CVE-2022-20846)

nvd.nist.gov (CVE-2022-20846)

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