Vulnerability CVE-2017-7482
Published: 2018-07-30

Description:
In the Linux kernel before version 4.12, Kerberos 5 tickets decoded when using the RXRPC keys incorrectly assumes the size of a field. This could lead to the size-remaining variable wrapping and the data pointer going over the end of the buffer. This could possibly lead to memory corruption and possible privilege escalation.

Type:

CWE-190

 (Integer Overflow or Wraparound)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.2/10
10/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Redhat -> Enterprise mrg 
Linux -> Linux kernel 
Debian -> Debian linux 

 References:
http://seclists.org/oss-sec/2017/q2/602
http://www.securityfocus.com/bid/99299
http://www.securitytracker.com/id/1038787
https://access.redhat.com/errata/RHSA-2019:0641
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7482
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f2f97656ada8d811d3c1bef503ced266fcd53a0
https://www.debian.org/security/2017/dsa-3927
https://www.debian.org/security/2017/dsa-3945
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