CVE-2017-9502
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 p…
Published 9 y ago · modified 4 mo ago · JSON
Summary
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://").
Exploit prediction (EPSS)
3.29% probability of exploitation in the next 30 days, higher than 89% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.0 | 5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
- securitytracker.com /id/1038697 · vdb-entry, x_refsource_SECTRACK, x_transferred
- openwall.com /lists/oss-security/2017/06/14/1 · x_refsource_CONFIRM, x_transferred
- curl.haxx.se /docs/adv_20170614.html · x_refsource_CONFIRM, x_transferred
- securityfocus.com /bid/99120 · vdb-entry, x_refsource_BID, x_transferred
Sources
- CVE List: CVE-2017-9502
- NVD: CVE-2017-9502
vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.