Device reload via malformed management request
Published May 1, 2024 · Updated Aug 1, 2024
Denial of service in Cisco IP Phone firmware allows remote attackers to reload devices through the web-based management interface. The interface insufficiently validates user-supplied data in a crafted web request before processing it, resulting in an out-of-bounds write. No authentication or user interaction is required; successful exploitation reboots the phone and interrupts its service.
Summary
What happened
Denial of service in Cisco IP Phone firmware allows remote attackers to reload devices through the web-based management interface. The interface insufficiently validates user-supplied data in a crafted web request before processing it, resulting in an out-of-bounds write. No authentication or user interaction is required; successful exploitation reboots the phone and interrupts its service.
The record
- CVE
- CVE-2024-20376
- Published
- May 1, 2024
- Updated
- Aug 1, 2024
- Vendor
- ClamAV
- Product
- Cisco IP Phone 6821 with Multiplatform Firmware
- Classifications
- CWE-787, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 1, 2024CVE publishedPublication date reported by the CVE source.
- Aug 1, 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=0 <=12.0.4
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.
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Technologies
Your stack
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Your stack
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