A vulnerability in the IP Service Level Agreements (IP SLA) responder and Two-Way Active Measurement Protocol (TWAMP) features of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause device packet memory to become exhausted or cause the IP SLA process to crash, resulting in a denial of service (DoS) condition. This vulnerability exists because socket creation failures are mishandled during the IP SLA and TWAMP processes. An attacker could exploit this vulnerability by sending specific IP SLA or TWAMP packets to an affected device. A successful exploit could allow the attacker to exhaust the packet memory, which will impact other processes, such as routing protocols, or crash the IP SLA process.
Attack Vector Network
Attack Complexity Low
Privileges Required None
Scope Changed
Confidentiality Impact None
Integrity Impact None
Availability Impact High
User Interaction None
No CVSS v3.0
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
AV:N/AC:M/Au:N/C:N/I:N/A:P
Vendors | Products |
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Cisco |
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Configuration 1 [-]
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Configuration 2 [-]
AND |
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Configuration 3 [-]
AND |
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Configuration 4 [-]
AND |
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Configuration 5 [-]
AND |
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Configuration 6 [-]
AND |
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Configuration 7 [-]
AND |
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Configuration 8 [-]
AND |
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Configuration 9 [-]
AND |
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References
Link | Resource |
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https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipsla-ZA3SRrpP | Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: cisco
Published: 2021-09-08T00:00:00
Updated: 2021-09-09T05:01:03
Reserved: 2021-06-15T00:00:00
Link: CVE-2021-34720
JSON object: View
NVD Information
Status : Modified
Published: 2021-09-09T05:15:11.463
Modified: 2023-11-07T03:36:11.803
Link: CVE-2021-34720
JSON object: View
Redhat Information
No data.
CWE