CVE-2012-2127
Description
From CVE.org
fs/proc/root.c in the procfs implementation in the Linux kernel before 3.2 does not properly interact with CLONE_NEWPID clone system calls, which allows remote attackers to cause a denial of service (reference leak and memory consumption) by making many connections to a daemon that uses PID namespaces to isolate clients, as demonstrated by vsftpd.
Statement
This issue did not affect the Linux kernel as shipped with Red Hat Enterprise Linux 4, 5, and 6 as they did not backport the upstream commit 423e0ab0 that introduced this issue. This issue did not affect Red Hat Enteprise Linux MRG 2.
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).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v2 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.6 | 5 | N/A |
| Attack Vector | Local | Network | N/A |
| Access Complexity | Low | Low | N/A |
| Authentication | Single | None | N/A |
| Confidentiality Impact | None | None | N/A |
| Integrity Impact | None | None | N/A |
| Availability Impact | Complete | Partial | N/A |
Vector
Red Hat: AV:L/AC:L/Au:S/C:N/I:N/A:C
NVD: AV:N/AC:L/Au:N/C:N/I:N/A:P
Acknowledgements
Red Hat would like to thank Vadim Ponomarev for reporting this issue.
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