Device reload via mishandled UTD-bound tunnel packets
Published Sep 25, 2024 · Updated Sep 25, 2024
Denial of service in Cisco IOS XE Software in controller mode allows remote attackers to reload affected devices via crafted tunnel traffic. The UTD-bound traffic classifier improperly handles certain packets as they egress an SD-WAN IPsec tunnel, triggering the reload. Exposure requires UTD to be installed and enabled with an IPsec SD-WAN tunnel; GRE tunnels are unaffected.
Summary
What happened
Denial of service in Cisco IOS XE Software in controller mode allows remote attackers to reload affected devices via crafted tunnel traffic. The UTD-bound traffic classifier improperly handles certain packets as they egress an SD-WAN IPsec tunnel, triggering the reload. Exposure requires UTD to be installed and enabled with an IPsec SD-WAN tunnel; GRE tunnels are unaffected.
The record
- CVE
- CVE-2024-20455
- Published
- Sep 25, 2024
- Updated
- Sep 25, 2024
- Vendor
- ClamAV
- Product
- Cisco IOS XE Software
- Classifications
- CWE-371, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 25, 2024CVE publishedPublication date reported by the CVE source.
- Sep 25, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=17.10.1
- Affected versionversion=17.10.1a
- Affected versionversion=17.10.1b
- Affected versionversion=17.1.1
- Affected versionversion=17.11.1
- Affected versionversion=17.11.1a
- Affected versionversion=17.11.99sw
- Affected versionversion=17.11.99SW
- Affected versionversion=17.1.1a
- Affected versionversion=17.1.1s
- Affected versionversion=17.1.1t
- Affected versionversion=17.12.1
- Affected versionversion=17.12.1a
- Affected versionversion=17.12.1w
- Affected versionversion=17.12.2
- Affected versionversion=17.12.2a
- Affected versionversion=17.1.3
- Affected versionversion=17.13.1
- Affected versionversion=17.13.1a
- Affected versionversion=17.2.1
- Affected versionversion=17.2.1a
- Affected versionversion=17.2.1r
- Affected versionversion=17.2.1v
- Affected versionversion=17.2.2
- Affected versionversion=17.2.3
- Affected versionversion=17.3.1
- Affected versionversion=17.3.1a
- Affected versionversion=17.3.1w
- Affected versionversion=17.3.1x
- Affected versionversion=17.3.1z
- Affected versionversion=17.3.2
- Affected versionversion=17.3.2a
- Affected versionversion=17.3.3
- Affected versionversion=17.3.4
- Affected versionversion=17.3.4a
- Affected versionversion=17.3.4b
- Affected versionversion=17.3.4c
- Affected versionversion=17.3.5
- Affected versionversion=17.3.5a
- Affected versionversion=17.3.5b
- Affected versionversion=17.3.6
- Affected versionversion=17.3.7
- Affected versionversion=17.3.8
- Affected versionversion=17.3.8a
- Affected versionversion=17.4.1
- Affected versionversion=17.4.1a
- Affected versionversion=17.4.1b
- Affected versionversion=17.4.2
- Affected versionversion=17.4.2a
- Affected versionversion=17.5.1
- Affected versionversion=17.5.1a
- Affected versionversion=17.6.1
- Affected versionversion=17.6.1a
- Affected versionversion=17.6.1w
- Affected versionversion=17.6.1x
- Affected versionversion=17.6.1y
- Affected versionversion=17.6.1z
- Affected versionversion=17.6.1z1
- Affected versionversion=17.6.2
- Affected versionversion=17.6.3
- Affected versionversion=17.6.3a
- Affected versionversion=17.6.4
- Affected versionversion=17.6.5
- Affected versionversion=17.6.5a
- Affected versionversion=17.6.6
- Affected versionversion=17.6.6a
- Affected versionversion=17.7.1
- Affected versionversion=17.7.1a
- Affected versionversion=17.7.1b
- Affected versionversion=17.7.2
- Affected versionversion=17.8.1
- Affected versionversion=17.8.1a
- Affected versionversion=17.9.1
- Affected versionversion=17.9.1a
- Affected versionversion=17.9.1w
- Affected versionversion=17.9.1x
- Affected versionversion=17.9.1x1
- Affected versionversion=17.9.1y
- Affected versionversion=17.9.1y1
- Affected versionversion=17.9.2
- Affected versionversion=17.9.2a
- Affected versionversion=17.9.3
- Affected versionversion=17.9.3a
- Affected versionversion=17.9.4
- Affected versionversion=17.9.4a
- Affected versionversion=17.9.5
- Affected versionversion=17.9.5a
- Affected versionversion=17.9.5b
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo