CVE-2017-17807

Advisory lineage Upstream: 0 Downstream: 12
Modified
Published: 20 Dec 2017, 23:00
Last modified:05 Aug 2024, 20:59

Vulnerability Summary

Overall Risk (default)
low
13/100
CVSS Score
3.3 LOW
v3.0 (nvd)
EPSS Score
0.06% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

20 Dec 2017, 23:00
Published
Vulnerability first disclosed
05 Aug 2024, 20:59
Last Modified
Vulnerability information updated

Description

The KEYS subsystem in the Linux kernel before 4.14.6 omitted an access-control check when adding a key to the current task's "default request-key keyring" via the request_key() system call, allowing a local user to use a sequence of crafted system calls to add keys to a keyring with only Search permission (not Write permission) to that keyring, related to construct_get_dest_keyring() in security/keys/request_key.c.

CVSS Metrics

  • v3.0•LOW•Score: 3.3CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
  • v2.0•LOW•Score: 2.1AV:L/AC:L/Au:N/C:N/I:P/A:N

EPSS Trends

Current EPSS score: 0.06%• Percentile: 19%

Techniques & Countermeasures

  • CWE-862•Missing Authorization

    The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Affected Systems

  • linux•linux_kernel

    < 4.14.6

References (15)