Stack-based Buffer Overflow Affecting kernel-bootwrapper package, versions <0:3.10.0-693.el7
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-CENTOS7-KERNELBOOTWRAPPER-2084698
- published26 Jul 2021
- disclosed13 Oct 2016
Introduced: 13 Oct 2016
CVE-2016-7042 (opens in a new tab)How to fix?
Upgrade Centos:7 kernel-bootwrapper to version 0:3.10.0-693.el7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-bootwrapper package and not the kernel-bootwrapper package as distributed by Centos.
See How to fix? for Centos:7 relevant fixed versions and status.
The proc_keys_show function in security/keys/proc.c in the Linux kernel through 4.8.2, when the GNU Compiler Collection (gcc) stack protector is enabled, uses an incorrect buffer size for certain timeout data, which allows local users to cause a denial of service (stack memory corruption and panic) by reading the /proc/keys file.
References
- http://www.securityfocus.com/bid/93544
- https://bugzilla.redhat.com/show_bug.cgi?id=1373966
- https://source.android.com/security/bulletin/2017-01-01.html
- https://access.redhat.com/security/cve/CVE-2016-7042
- http://www.openwall.com/lists/oss-security/2016/10/13/5
- http://rhn.redhat.com/errata/RHSA-2017-0817.html
- https://access.redhat.com/errata/RHSA-2017:1842