Pre-auth code execution via unchecked curTime formatting
Published Jul 17, 2023 · Updated Oct 31, 2024
Stack overflow in the boa formLogin handler in D-Link DIR-619L 2.04(TW) allows remote attackers to execute code via curTime. The handler passes the unchecked HTTP parameter through nested sprintf calls into a 256-byte stack buffer used to build a redirect response. No authentication or user interaction is required; the published proof of concept demonstrates a router reboot, while code execution is reported.
Summary
What happened
Stack overflow in the boa formLogin handler in D-Link DIR-619L 2.04(TW) allows remote attackers to execute code via curTime. The handler passes the unchecked HTTP parameter through nested sprintf calls into a 256-byte stack buffer used to build a redirect response. No authentication or user interaction is required; the published proof of concept demonstrates a router reboot, while code execution is reported.
The record
- CVE
- CVE-2023-37791
- Published
- Jul 17, 2023
- Updated
- Oct 31, 2024
- Vendor
- D-Link Corporation
- Product
- DIR-619L
- Classifications
- CWE-787, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 17, 2023CVE publishedPublication date reported by the CVE source.
- Oct 31, 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=v2.04(TW)
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
- DIR-619L curTime stack-overflow proof of conceptproof 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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