Unauthenticated root command execution via HTTP overflow
Published Aug 7, 2024 · Updated Aug 22, 2024
Buffer overflow in the web interface of Cisco Small Business SPA300 and SPA500 IP Phones allows remote attackers to execute commands as root. The HTTP request handler does not properly check incoming packets for errors, allowing crafted requests to overflow an internal buffer. No authentication or special configuration is required, and successful exploitation grants root-level command execution on the phone.
Summary
What happened
Buffer overflow in the web interface of Cisco Small Business SPA300 and SPA500 IP Phones allows remote attackers to execute commands as root. The HTTP request handler does not properly check incoming packets for errors, allowing crafted requests to overflow an internal buffer. No authentication or special configuration is required, and successful exploitation grants root-level command execution on the phone.
The record
- CVE
- CVE-2024-20450
- Published
- Aug 7, 2024
- Updated
- Aug 22, 2024
- Vendor
- ClamAV
- Product
- Cisco Small Business IP Phone Firmware
- Classifications
- CWE-120, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 7, 2024CVE publishedPublication date reported by the CVE source.
- Aug 22, 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=1.0.17
- Affected versionversion=7.3.7
- Affected versionversion=7.4.3
- Affected versionversion=7.4.4
- Affected versionversion=7.4.6
- Affected versionversion=7.4.7
- Affected versionversion=7.4.8
- Affected versionversion=7.4.9
- Affected versionversion=7.5.1
- Affected versionversion=7.5.2
- Affected versionversion=7.5.2a
- Affected versionversion=7.5.2b
- Affected versionversion=7.5.3
- Affected versionversion=7.5.4
- Affected versionversion=7.5.5
- Affected versionversion=7.5.5a
- Affected versionversion=7.5.5b
- Affected versionversion=7.5.6
- Affected versionversion=7.5.6a
- Affected versionversion=7.5.6xu
- Affected versionversion=7.5.7
- Affected versionversion=7.5.7s
- Affected versionversion=7.6.0
- Affected versionversion=7.6.1
- Affected versionversion=7.6.2
- Affected versionversion=7.6.2sr1
- Affected versionversion=7.6.2sr2
- Affected versionversion=7.6.2sr3
- Affected versionversion=7.6.2sr4
- Affected versionversion=7.6.2sr5
- Affected versionversion=7.6.2sr6
- Affected versionversion=7.6.2sr7
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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