CVE-2017-7482

moderate-risk
Published 2018-07-30

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.

Do I need to act?

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0.16% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (4)

Affected Vendors

Debian Redhat Linux

References (16)

Mailing List http://seclists.org/oss-sec/2017/q2/602
Third Party Advisory http://www.securityfocus.com/bid/99299
Third Party Advisory http://www.securitytracker.com/id/1038787
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0641
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7482
Patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f...
Third Party Advisory https://www.debian.org/security/2017/dsa-3927
Third Party Advisory https://www.debian.org/security/2017/dsa-3945
Mailing List http://seclists.org/oss-sec/2017/q2/602
Third Party Advisory http://www.securityfocus.com/bid/99299
Third Party Advisory http://www.securitytracker.com/id/1038787
Third Party Advisory https://access.redhat.com/errata/RHSA-2019:0641
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7482
Patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f...
Third Party Advisory https://www.debian.org/security/2017/dsa-3927
Third Party Advisory https://www.debian.org/security/2017/dsa-3945
35
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 1/34 · Minimal
Exposure 10/34 · Low