Authenticated memory corruption via oversized credentials
Published Aug 7, 2023 · Updated Oct 11, 2024
Buffer overflows in NETGEAR JWNR2000v2, XWN5001, and XAVN2001v2 allow remote authenticated users to corrupt memory through credentials. The update_auth function copies attacker-controlled http_passwd and http_username NVRAM values without adequately limiting their length, so long strings overrun destination buffers. The affected builds are JWNR2000v2 1.0.0.11, XWN5001 0.4.1.1, and XAVN2001v2 0.4.0.7; administrative web-interface access is required.
Summary
What happened
Buffer overflows in NETGEAR JWNR2000v2, XWN5001, and XAVN2001v2 allow remote authenticated users to corrupt memory through credentials. The update_auth function copies attacker-controlled http_passwd and http_username NVRAM values without adequately limiting their length, so long strings overrun destination buffers. The affected builds are JWNR2000v2 1.0.0.11, XWN5001 0.4.1.1, and XAVN2001v2 0.4.0.7; administrative web-interface access is required.
The record
- CVE
- CVE-2023-38922
- Published
- Aug 7, 2023
- Updated
- Oct 11, 2024
- Vendor
- NETGEAR
- Product
- XWN5001
- Classifications
- CWE-120, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 7, 2023CVE publishedPublication date reported by the CVE source.
- Oct 11, 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=v0.4.1.1
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
- FirmRec oversized credential triggerproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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