Vulnerability Description
In curl before 7.54.1 on Windows and DOS, libcurl's default protocol function, which is the logic that allows an application to set which protocol libcurl should attempt to use when given a URL without a scheme part, had a flaw that could lead to it overwriting a heap based memory buffer with seven bytes. If the default protocol is specified to be FILE or a file: URL lacks two slashes, the given "URL" starts with a drive letter, and libcurl is built for Windows or DOS, then libcurl would copy the path 7 bytes off, so that the end of the given path would write beyond the malloc buffer (7 bytes being the length in bytes of the ascii string "file://").
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Haxx | Curl | <= 7.54.0 |
Related Weaknesses (CWE)
References
- http://openwall.com/lists/oss-security/2017/06/14/1Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/99120Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038697
- https://curl.haxx.se/docs/adv_20170614.htmlVendor Advisory
- http://openwall.com/lists/oss-security/2017/06/14/1Mailing ListThird Party Advisory
- http://www.securityfocus.com/bid/99120Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038697
- https://curl.haxx.se/docs/adv_20170614.htmlVendor Advisory
FAQ
What is CVE-2017-9502?
CVE-2017-9502 is a vulnerability with a CVSS score of 5.3 (MEDIUM). In curl before 7.54.1 on Windows and DOS, libcurl's default protocol function, which is the logic that allows an application to set which protocol libcurl should attempt to use when given a URL withou...
How severe is CVE-2017-9502?
CVE-2017-9502 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-9502?
Check the references section above for vendor advisories and patch information. Affected products include: Haxx Curl.