Remote code execution via oversized TMP packet
Published Aug 1, 2023 · Updated Oct 21, 2024
Heap-based buffer overflow in TP-Link Archer AX21 firmware 1.1.4 Build 20230219 allows remote attackers to execute code over the LAN. The TMP packet handler in /usr/lib/libtmpv2.so trusts an attacker-controlled content_length and receives that many bytes into a smaller heap buffer. Network access to the router's LAN is required, and successful exploitation executes attacker-controlled code on the appliance.
Summary
What happened
Heap-based buffer overflow in TP-Link Archer AX21 firmware 1.1.4 Build 20230219 allows remote attackers to execute code over the LAN. The TMP packet handler in /usr/lib/libtmpv2.so trusts an attacker-controlled content_length and receives that many bytes into a smaller heap buffer. Network access to the router's LAN is required, and successful exploitation executes attacker-controlled code on the appliance.
The record
- CVE
- CVE-2023-31710
- Published
- Aug 1, 2023
- Updated
- Oct 21, 2024
- Vendor
- TP-Link
- Product
- Archer AX21
- Classifications
- CWE-122, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 1, 2023CVE publishedPublication date reported by the CVE source.
- Oct 21, 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=V3_1.1.4
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
- CVE-2023-31710 exploit demonstration videoproof of concept · demonstrated
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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