Unauthenticated memory exhaustion via missing query parameters
Published Jul 27, 2022 · Updated Aug 3, 2024
Denial of service in Patlite NH-FB series devices through 1.46 allows remote attackers to exhaust memory via malformed API requests. The /etc/lighttpd/api/control binary allocates a buffer for each read without checking for expected GET parameters, so repeated requests consume all device memory. No authentication or user interaction is required, but Patlite disputes the claim and reports that the event could not be reproduced.
Summary
What happened
Denial of service in Patlite NH-FB series devices through 1.46 allows remote attackers to exhaust memory via malformed API requests. The /etc/lighttpd/api/control binary allocates a buffer for each read without checking for expected GET parameters, so repeated requests consume all device memory. No authentication or user interaction is required, but Patlite disputes the claim and reports that the event could not be reproduced.
The record
- CVE
- CVE-2022-35911
- Published
- Jul 27, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-119, T1499.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 27, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
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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
- Patlite NH-FB memory-consumption request loopproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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