CVE-2014-7186
Description
It was identified that the fixed-sized redir_stack could be forced to overflow in the Bash parser, resulting in memory corruption, and possibly leading to arbitrary code execution when evaluating untrusted input that would not otherwise be run as code.
Statement
A patch for this issue was applied to the bash packages in Red Hat Enterprise Linux via RHSA-2014:1306, RHSA-2014:1311, and RHSA-2014:1312. The errata do not mention the CVE in the description, as the CVE was only assigned after those updates were released.
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 v2 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.6 | 10 | N/A |
| Attack Vector | Local | Network | N/A |
| Access Complexity | Low | Low | N/A |
| Authentication | None | None | N/A |
| Confidentiality Impact | Partial | Complete | N/A |
| Integrity Impact | Partial | Complete | N/A |
| Availability Impact | Partial | Complete | N/A |
Vector
Red Hat: AV:L/AC:L/Au:N/C:P/I:P/A:P
NVD: AV:N/AC:L/Au:N/C:C/I:C/A:C
Acknowledgements
This issue was discovered by Florian Weimer (Red Hat Product Security).
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