CVE-2023-20049
Cisco IOS XR Software for ASR 9000 Series Routers Bidirectional Forwarding Detection Denial of Service Vulnerability
Severity Score
7.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
A vulnerability in the bidirectional forwarding detection (BFD) hardware offload feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition. This vulnerability is due to the incorrect handling of malformed BFD packets that are received on line cards where the BFD hardware offload feature is enabled. An attacker could exploit this vulnerability by sending a crafted IPv4 BFD packet to an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset, resulting in loss of traffic over that line card while the line card reloads.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2022-10-27 CVE Reserved
- 2023-03-09 CVE Published
- 2024-08-02 CVE Updated
- 2024-08-19 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-805: Buffer Access with Incorrect Length Value
CAPEC
References (1)
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9000v-v2 Search vendor "Cisco" for product "Asr 9000v-v2" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9001 Search vendor "Cisco" for product "Asr 9001" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9006 Search vendor "Cisco" for product "Asr 9006" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9010 Search vendor "Cisco" for product "Asr 9010" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9901 Search vendor "Cisco" for product "Asr 9901" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9902 Search vendor "Cisco" for product "Asr 9902" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9903 Search vendor "Cisco" for product "Asr 9903" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9904 Search vendor "Cisco" for product "Asr 9904" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9906 Search vendor "Cisco" for product "Asr 9906" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9910 Search vendor "Cisco" for product "Asr 9910" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9912 Search vendor "Cisco" for product "Asr 9912" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | < 7.5.3 Search vendor "Cisco" for product "Ios Xr" and version " < 7.5.3" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9922 Search vendor "Cisco" for product "Asr 9922" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9000v-v2 Search vendor "Cisco" for product "Asr 9000v-v2" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9001 Search vendor "Cisco" for product "Asr 9001" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9006 Search vendor "Cisco" for product "Asr 9006" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9010 Search vendor "Cisco" for product "Asr 9010" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9901 Search vendor "Cisco" for product "Asr 9901" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9902 Search vendor "Cisco" for product "Asr 9902" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9903 Search vendor "Cisco" for product "Asr 9903" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9904 Search vendor "Cisco" for product "Asr 9904" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9906 Search vendor "Cisco" for product "Asr 9906" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9910 Search vendor "Cisco" for product "Asr 9910" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9912 Search vendor "Cisco" for product "Asr 9912" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | >= 7.6 < 7.6.2 Search vendor "Cisco" for product "Ios Xr" and version " >= 7.6 < 7.6.2" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9922 Search vendor "Cisco" for product "Asr 9922" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9000v-v2 Search vendor "Cisco" for product "Asr 9000v-v2" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9001 Search vendor "Cisco" for product "Asr 9001" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9006 Search vendor "Cisco" for product "Asr 9006" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9010 Search vendor "Cisco" for product "Asr 9010" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9901 Search vendor "Cisco" for product "Asr 9901" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9902 Search vendor "Cisco" for product "Asr 9902" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9903 Search vendor "Cisco" for product "Asr 9903" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9904 Search vendor "Cisco" for product "Asr 9904" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9906 Search vendor "Cisco" for product "Asr 9906" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9910 Search vendor "Cisco" for product "Asr 9910" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9912 Search vendor "Cisco" for product "Asr 9912" | - | - |
Safe
|
| Cisco Search vendor "Cisco" | Ios Xr Search vendor "Cisco" for product "Ios Xr" | 7.7 Search vendor "Cisco" for product "Ios Xr" and version "7.7" | - |
Affected
| in | Cisco Search vendor "Cisco" | Asr 9922 Search vendor "Cisco" for product "Asr 9922" | - | - |
Safe
|