Information disclosure in Linux kernel - CVE-2014-7284
Published: October 13, 2014 / Updated: August 10, 2020
Vulnerability identifier: #VU41225
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2014-7284
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.
The net_get_random_once implementation in net/core/utils.c in the Linux kernel 3.13.x and 3.14.x before 3.14.5 on certain Intel processors does not perform the intended slow-path operation to initialize random seeds, which makes it easier for remote attackers to spoof or disrupt IP communication by leveraging the predictability of TCP sequence numbers, TCP and UDP port numbers, and IP ID values.
Affected software
Linux kernel
Ubuntu
linux (Ubuntu package)
linux-lts-trusty (Ubuntu package)
Ubuntu
linux (Ubuntu package)
linux-lts-trusty (Ubuntu package)
How to mitigate CVE-2014-7284
Install update from vendor's website.
linux (Ubuntu package) - update to 3.13.0-32.57
linux-lts-trusty (Ubuntu package) - update to 3.13.0-32.57~precise1
linux-lts-trusty (Ubuntu package) - update to 3.13.0-32.57~precise1
External References
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3d4405226d27b3a215e4d03cfa51f536244e5de7
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.14.5
- http://www.openwall.com/lists/oss-security/2014/10/01/19
- https://bugzilla.redhat.com/show_bug.cgi?id=1148788
- https://github.com/torvalds/linux/commit/3d4405226d27b3a215e4d03cfa51f536244e5de7
- https://web.archive.org/web/20141002163852/
- http://secondlookforensics.com/ngro-linux-kernel-bug/