Unauthenticated root code execution via DNS handler overflow
Published Jul 20, 2022 · Updated Aug 3, 2024
Stack overflow in the DelDNSHnList interface of H3C Magic R200 R200V200R004L02 allows remote attackers to execute code via HTTP. The handler passes the untrusted param value to getElement, which permits 64 bytes to be copied into the 16-byte V6 stack buffer. The interface accepts a crafted POST without authentication, and successful exploitation yields a root shell.
Summary
What happened
Stack overflow in the DelDNSHnList interface of H3C Magic R200 R200V200R004L02 allows remote attackers to execute code via HTTP. The handler passes the untrusted param value to getElement, which permits 64 bytes to be copied into the 16-byte V6 stack buffer. The interface accepts a crafted POST without authentication, and successful exploitation yields a root shell.
The record
- CVE
- CVE-2022-34603
- Published
- Jul 20, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 20, 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
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
- H3C Magic R200 DelDNSHnList HTTP proof of conceptfunctional · demonstrated
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Technologies
Your stack
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Your stack
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