Home/CVE/In the Linux kernel before version 4.12, Kerberos 5 tickets decoded when using the RXRPC keys incorrectly assumes the si
CVE

CVE-2017-7482

In the Linux kernel before version 4.12, Kerberos 5 tickets decoded when using the RXRPC keys incorrectly assumes the si

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.

HIGH · CVSS 7.8 EPSS 0.00161
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-190Integer Overflow or Wraparound
CWE-190Integer Overflow or Wraparound
▤

Affected Products & Versions

10
linux kernel< 3.2.90
linux kernel>= 3.3 and < 3.10.108
linux kernel>= 3.11 and < 3.16.45
linux kernel>= 3.17 and < 3.18.59
linux kernel>= 3.19 and < 4.1.43
linux kernel>= 4.2 and < 4.4.75
linux kernel>= 4.5 and < 4.9.35
linux kernel>= 4.10 and < 4.11.8
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Jul 2018 · 02:29 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

15
rhsaRHSA-2019:0641Important
suse-csafSUSE-SU-2018:0213-1
suse-csafSUSE-SU-2017:3398-1
suse-csafSUSE-SU-2017:3410-1
suse-csafSUSE-SU-2017:2920-1
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://seclists.org/oss-sec/2017/q2/602Mailing ListPatchThird Party Advisory
http://www.securityfocus.com/bid/99299Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038787Third Party AdvisoryVDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7482Issue TrackingPatchThird Party Advisory
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5f2f97656ada8d811d3c1bef503ced266fcd53a0PatchVendor Advisory
https://www.debian.org/security/2017/dsa-3927Third Party Advisory
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