CVE-2017-9502: Buffer Overflow
First published: Wed Jun 14 2017(Updated: )
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://").
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Curl | <=7.54.0 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2017-9502?
CVE-2017-9502 has been assigned a medium severity rating due to the potential for memory corruption leading to application crashes or arbitrary code execution.
How do I fix CVE-2017-9502?
To fix CVE-2017-9502, upgrade to curl version 7.54.1 or later, which includes a patch for the vulnerability.
What systems are affected by CVE-2017-9502?
CVE-2017-9502 affects curl versions prior to 7.54.1 specifically on Windows and DOS platforms.
Can CVE-2017-9502 be exploited remotely?
Yes, CVE-2017-9502 can potentially be exploited remotely if an attacker crafts a URL that triggers the vulnerability.
What is the impact of CVE-2017-9502?
The impact of CVE-2017-9502 includes possible memory corruption which could lead to crashes or execution of malicious code in affected applications.
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