CVE-2011-4080
The MITRE CVE dictionary describes this issue as:
The sysrq_sysctl_handler function in kernel/sysctl.c in the Linux kernel before 2.6.39 does not require the CAP_SYS_ADMIN capability to modify the dmesg_restrict value, which allows local users to bypass intended access restrictions and read the kernel ring buffer by leveraging root privileges, as demonstrated by a root user in a Linux Containers (aka LXC) environment.
Find out more about CVE-2011-4080 from the MITRE CVE dictionary dictionary and NIST NVD.
Statement
Red Hat Enterprise Linux 4 is now in Production 3 of the maintenance
life-cycle, https://access.redhat.com/support/policy/updates/errata/, therefore
the fix for this issue is not currently planned to be included in the future
updates. Future kernel updates in Red Hat Enterprise Linux 5, 6 and Red Hat Enterprise MRG may address this flaw.
CVSS v2 metrics
| Base Score | 1.5 |
|---|---|
| Base Metrics | AV:L/AC:M/Au:S/C:P/I:N/A:N |
| Access Vector | Local |
| Access Complexity | Medium |
| Authentication | Single |
| Confidentiality Impact | Partial |
| Integrity Impact | None |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Red Hat Security Errata
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 6 (kernel) | RHSA-2012:0481 | 2012-04-17 |
Affected Packages State
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise MRG 2 | realtime-kernel | Will not fix |
| Red Hat Enterprise Linux 5 | kernel | Will not fix |
| Red Hat Enterprise Linux 4 | kernel | Will not fix |
CVE description copyright © 2017, The MITRE Corporation