CVE-2014-4699

MEDIUM

Description

The Linux kernel before 3.15.4 on Intel processors does not properly restrict use of a non-canonical value for the saved RIP address in the case of a system call that does not use IRET, which allows local users to leverage a race condition and gain privileges, or cause a denial of service (double fault), via a crafted application that makes ptrace and fork system calls.

References

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b9cd18de4db3c9ffa7e17b0dc0ca99ed5aa4d43a

http://linux.oracle.com/errata/ELSA-2014-0924.html

http://linux.oracle.com/errata/ELSA-2014-3047.html

http://linux.oracle.com/errata/ELSA-2014-3048.html

http://openwall.com/lists/oss-security/2014/07/05/4

http://openwall.com/lists/oss-security/2014/07/08/16

http://openwall.com/lists/oss-security/2014/07/08/5

http://packetstormsecurity.com/files/127573/Linux-Kernel-ptrace-sysret-Local-Privilege-Escalation.html

http://secunia.com/advisories/59633

http://secunia.com/advisories/59639

http://secunia.com/advisories/59654

http://secunia.com/advisories/60220

http://secunia.com/advisories/60380

http://secunia.com/advisories/60393

http://www.debian.org/security/2014/dsa-2972

http://www.exploit-db.com/exploits/34134

http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.4

http://www.openwall.com/lists/oss-security/2014/07/04/4

http://www.osvdb.org/108754

http://www.ubuntu.com/usn/USN-2266-1

http://www.ubuntu.com/usn/USN-2267-1

http://www.ubuntu.com/usn/USN-2268-1

http://www.ubuntu.com/usn/USN-2269-1

http://www.ubuntu.com/usn/USN-2270-1

http://www.ubuntu.com/usn/USN-2271-1

http://www.ubuntu.com/usn/USN-2272-1

http://www.ubuntu.com/usn/USN-2273-1

http://www.ubuntu.com/usn/USN-2274-1

https://bugzilla.redhat.com/show_bug.cgi?id=1115927

https://github.com/torvalds/linux/commit/b9cd18de4db3c9ffa7e17b0dc0ca99ed5aa4d43a

https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.10.47

https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.14.11

https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.4.97

Details

Source: MITRE

Published: 2014-07-09

Updated: 2014-08-01

Type: CWE-362

Risk Information

CVSS v2.0

Base Score: 6.9

Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.4

Severity: MEDIUM