CVE-2017-7482

Impact:
Moderate
Public Date:
2017-06-26
CWE:
CWE-190
Bugzilla:
1446288: CVE-2017-7482 kernel: net/rxrpc: overflow in decoding of krb5 principal
Keberos 5 tickets being 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.

Find out more about CVE-2017-7482 from the MITRE CVE dictionary dictionary and NIST NVD.

Statement

This issue does not affect the Linux kernel packages as shipped with Red Hat Enterprise Linux 5,6 and 7 as the module is not enabled on these systems.

This issue affects the Linux kernel packages as shipped with Red Hat Enterprise MRG-2. Future Linux kernel updates for the respective releases may address this issue.

CVSS v3 metrics

NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.

CVSS3 Base Score 7.1
CVSS3 Base Metrics CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Impact High
Availability Impact High

Affected Packages State

Platform Package State
Red Hat Enterprise MRG 2 realtime-kernel Will not fix
Red Hat Enterprise Linux 7 kernel Not affected
Red Hat Enterprise Linux 7 kernel-rt Will not fix
Red Hat Enterprise Linux 7 kernel-alt Not affected
Red Hat Enterprise Linux 6 kernel Not affected
Red Hat Enterprise Linux 5 kernel Not affected

Acknowledgements

Red Hat would like to thank Shi Lei (Qihoo 360 Gear Team) for reporting this issue.

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