CVE-2017-1000101
MEDIUM severity · CVSS 6.5 · Memory corruption
6.5CVSS MEDIUM
Summary
curl supports "globbing" of URLs, in which a user can pass a numerical range to have the tool iterate over those numbers to do a sequence of transfers. In the globbing function that parses the numerical range, there was an omission that made curl read a byte beyond the end of the URL if given a carefully crafted, or just wrongly written, URL. The URL is stored in a heap based buffer, so it could then be made to wrongly read something else instead of crashing. An example of a URL that triggers the flaw would be `http://ur%20[0-60000000000000000000`.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactNone
Availability impactNone
Exploit probability (EPSS)4%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Affected products we track (1)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://curl.haxx.se/docs/adv_20170809A.htmlAdvisory
- http://www.debian.org/security/2017/dsa-3992
- http://www.securityfocus.com/bid/100249Advisory
- http://www.securitytracker.com/id/1039117Advisory
- https://access.redhat.com/errata/RHSA-2018:3558
- https://security.gentoo.org/glsa/201709-14Advisory
- https://support.apple.com/HT208221