CVE-2015-1350: Medium severity linux kernel vulnerability
A flaw was found where a regular user could remove xattr permissions on files by using the chown or write systemcalls. An attacker could use this feature to remove capabilities effectively denying elevated permissions to valid users. Certain services and applications require the capabilities subsystem to work correctly.
Discussed here:
https://lkml.org/lkml/2015/1/17/145
As of 3.19 release, this commit is NOT in mainline tree.
Other sources
The VFS subsystem in the Linux kernel 3.x provides an incomplete set of requirements for setattr operations that underspecifies removing extended privilege attributes, which allows local users to cause a denial of service (capability stripping) via a failed invocation of a system call, as demonstrated by using chown to remove a capability from the ping or Wireshark dumpcap program.
— Launchpad
Affected Software
Remediation
Patch Available
Patch Available
Event History
Frequently Asked Questions
What is the severity of CVE-2015-1350?
CVE-2015-1350 is considered a medium severity vulnerability.
How do I fix CVE-2015-1350?
To fix CVE-2015-1350, update the Linux Kernel to a version that is not affected by this vulnerability.
Which systems are affected by CVE-2015-1350?
CVE-2015-1350 affects multiple versions of the Linux Kernel, Red Hat Enterprise Linux, and Debian-based systems.
What type of attack does CVE-2015-1350 facilitate?
CVE-2015-1350 allows an attacker to remove capabilities, potentially denying elevated permissions to valid users.
Is CVE-2015-1350 a local or remote vulnerability?
CVE-2015-1350 is a local vulnerability that can be exploited by authenticated users on the system.