CVE-2018-10931
Description
An API-exposure flaw was found in cobbler, where it exported CobblerXMLRPCInterface private functions over XMLRPC. A remote, unauthenticated attacker could use this flaw to gain important privileges within cobbler, as well as upload files to an arbitrary location in the daemon context.
Mitigation
If SELinux is enabled, it might prevent some locations from accepting uploaded files from the attacker. This prevents some basic attacks allowing remote code execution, although it would not exclude all other possibilities.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 9.8 | 9.8 | 9.8 |
| Attack Vector | Network | Network | Network |
| Attack Complexity | Low | Low | Low |
| Privileges Required | None | None | None |
| User Interaction | None | None | None |
| Scope | Unchanged | Unchanged | Unchanged |
| Confidentiality | High | High | High |
| Integrity Impact | High | High | High |
| Availability Impact | High | High | High |
Vector
Red Hat: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cve.org: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Understanding the Weakness (CWE)
Integrity,Confidentiality,Availability,Access Control,Other
Technical Impact: Gain Privileges or Assume Identity; Read Application Data; Modify Application Data; Execute Unauthorized Code or Commands; Other
Exposing critical functionality essentially provides an attacker with the privilege level of the exposed functionality. This could result in the modification or exposure of sensitive data or possibly even execution of arbitrary code.
Acknowledgements
This issue was discovered by Cedric Buissart (Red Hat).
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