#VU41286 Resource management error in Linux kernel - CVE-2014-6417

Vulnerability identifier: #VU41286

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2014-6417

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

net/ceph/auth_x.c in Ceph, as used in the Linux kernel before 3.16.3, does not properly consider the possibility of kmalloc failure, which allows remote attackers to cause a denial of service (system crash) or possibly have unspecified other impact via a long unencrypted auth ticket.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 3.16.0 - 3.16.1

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External links
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=c27a3e4d667fdcad3db7b104f75659478e0c68d8
https://tracker.ceph.com/issues/8979
https://tracker.ceph.com/issues/9560
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.16.3
https://www.openwall.com/lists/oss-security/2014/09/15/7
https://www.ubuntu.com/usn/USN-2376-1
https://www.ubuntu.com/usn/USN-2377-1
https://www.ubuntu.com/usn/USN-2378-1
https://www.ubuntu.com/usn/USN-2379-1
https://bugzilla.redhat.com/show_bug.cgi?id=1142072
https://github.com/torvalds/linux/commit/c27a3e4d667fdcad3db7b104f75659478e0c68d8

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.