RHEL 6 : kernel (RHSA-2017:2800)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

An update for kernel is now available for Red Hat Enterprise Linux 6.2
Advanced Update Support.

Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

Security Fix(es) :

* A flaw was found in the way the Linux kernel loaded ELF executables.
Provided that an application was built as Position Independent
Executable (PIE), the loader could allow part of that application's
data segment to map over the memory area reserved for its stack,
potentially resulting in memory corruption. An unprivileged local user
with access to SUID (or otherwise privileged) PIE binary could use
this flaw to escalate their privileges on the system.
(CVE-2017-1000253, Important)

Red Hat would like to thank Qualys Research Labs for reporting this
issue.

See also :

https://access.redhat.com/security/vulnerabilities/3189592
http://rhn.redhat.com/errata/RHSA-2017-2800.html
https://www.redhat.com/security/data/cve/CVE-2017-1000253.html

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 6.0
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 103499 ()

Bugtraq ID:

CVE ID: CVE-2017-1000253

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