Unauthenticated device reload via crafted DHCP request
Published Mar 27, 2024 · Updated Aug 27, 2024
Heap-based buffer overflow in Cisco IOS XE Software allows remote attackers to reload affected devices via a crafted IPv4 DHCP request. The DHCP snooping path mishandles the crafted packet while endpoint analytics processes it, causing the device to reload rather than reject the input. Exposure requires a vulnerable Catalyst 9000 or DNA Traffic Telemetry Appliance with DHCP snooping and endpoint analytics enabled; both features are disabled by default.
Summary
What happened
Heap-based buffer overflow in Cisco IOS XE Software allows remote attackers to reload affected devices via a crafted IPv4 DHCP request. The DHCP snooping path mishandles the crafted packet while endpoint analytics processes it, causing the device to reload rather than reject the input. Exposure requires a vulnerable Catalyst 9000 or DNA Traffic Telemetry Appliance with DHCP snooping and endpoint analytics enabled; both features are disabled by default.
The record
- CVE
- CVE-2024-20259
- Published
- Mar 27, 2024
- Updated
- Aug 27, 2024
- Vendor
- ClamAV
- Product
- Cisco IOS XE Software
- Classifications
- CWE-122, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 27, 2024CVE publishedPublication date reported by the CVE source.
- Aug 27, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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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=17.1.3
- 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
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.
Weakness, pattern, technique
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
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Your stack
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