CVE-2017-7482

Advisory lineage Upstream: 0 Downstream: 18
Modified
Published: 30 Jul 2018, 14:00
Last modified:05 Aug 2024, 16:04

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
0.16% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

30 Jul 2018, 14:00
Published
Vulnerability first disclosed
05 Aug 2024, 16:04
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • v3.0•HIGH•Score: 7.1CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
  • v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.16%• Percentile: 37%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Systems

  • debian•debian_linux

    8.0 | 9.0

  • linux•linux_kernel

    < 3.2.90 | ≥ 3.3, < 3.10.108 | ≥ 3.11, < 3.16.45 | ≥ 3.17, < 3.18.59 | ≥ 3.19, < 4.1.43 | ≥ 4.2, < 4.4.75 | ≥ 4.5, < 4.9.35 | ≥ 4.10, < 4.11.8

  • redhat•enterprise_mrg

    2.0

  • [unknown]•kernel:

    4.12

References (8)