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`.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2017-1000101 from the MITRE CVE dictionary dictionary and NIST NVD.
Red Hat Product Security has rated this issue as having Low security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
| CVSS3 Base Score | 4.2 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:L |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity Impact | None |
| Availability Impact | Low |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Software Collections for Red Hat Enterprise Linux 6 (httpd24-curl) | RHSA-2018:3558 | 2018-11-13 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 (httpd24-curl) | RHSA-2018:3558 | 2018-11-13 |
| Platform | Package | State |
|---|---|---|
| Red Hat JBoss Web Server 3.0 | curl | Not affected |
| Red Hat Enterprise Linux 7 | curl | Not affected |
| Red Hat Enterprise Linux 6 | curl | Not affected |
| Red Hat Enterprise Linux 5 | curl | Not affected |
| Red Hat Ceph Storage 2 | curl | Not affected |
| RHEV Manager 3 | mingw-virt-viewer | Not affected |
| .NET Core 2.0 on Red Hat Enterprise Linux | rh-dotnet20-curl | Under investigation |
| .NET Core 2.0 on Red Hat Enterprise Linux | rh-dotnet21-curl | Under investigation |
| .NET Core 1.0 on Red Hat Enterprise Linux | rh-dotnetcore10-curl | Under investigation |
| .NET Core 1.0 on Red Hat Enterprise Linux | rh-dotnetcore11-curl | Under investigation |
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