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7.5

Yawcam HTTP server lets attackers read any file

CVE-2017-17662 · published 8 years ago
Summary

The built‑in web server in Yawcam versions 0.2.6 up to 0.6.0 can be tricked into revealing files from the computer, such as system configuration files. An attacker can send specially crafted web requests that make the server walk outside its intended folder and return the contents of those files. Update Yawcam to a newer version or disable the HTTP server if it is not needed, and restrict network access to the device.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
yawcam yawcam >= 0.2.6, <= 0.6.0
cpe:2.3:a:yawcam:yawcam:*:*:*:*:*:*:*:*
Original advisory text
Directory traversal in the HTTP server on Yawcam 0.2.6 through 0.6.0 devices allows attackers to read arbitrary files through a sequence of the form '.x./' or '....\x/' where x is a pattern compose...
Directory traversal in the HTTP server on Yawcam 0.2.6 through 0.6.0 devices allows attackers to read arbitrary files through a sequence of the form '.x./' or '....\x/' where x is a pattern composed of one or more (zero or more for the second pattern) of either \ or ..\ -- for example a '.\./', '....\/' or '...\./' sequence. For files with no extension, a single dot needs to be appended to ensure the HTTP server does not alter the request, e.g., a "GET /.\./.\./.\./.\./.\./.\./.\./windows/system32/drivers/etc/hosts." request.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
7.5 High
Exploitation
3% chance of attack within 30 days
Type
CWE-22Path Traversal
Timeline
Published10 Jan 2018
Updated31 Oct 2026
First seen29 Sep 2026
Sources
CVE-2017-17662 · NVD
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