CVE-2017-16939

Advisory lineage Upstream: 0 Downstream: 108
Modified
Published: 24 Nov 2017, 10:00
Last modified:05 Aug 2024, 20:43

Vulnerability Summary

Overall Risk (default)
medium
43/100
CVSS Score
7.8 HIGH
v3.1 (nvd)
EPSS Score
10.15% MEDIUM
10% probability -0.72%
KEV
Not listed
Ransomware
No reports
Public exploits
2 found
Dark Web
Not detected

Timeline

24 Nov 2017, 10:00
Published
Vulnerability first disclosed
05 Aug 2024, 20:43
Last Modified
Vulnerability information updated

Description

The XFRM dump policy implementation in net/xfrm/xfrm_user.c in the Linux kernel before 4.13.11 allows local users to gain privileges or cause a denial of service (use-after-free) via a crafted SO_RCVBUF setsockopt system call in conjunction with XFRM_MSG_GETPOLICY Netlink messages.

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
  • v2.0•HIGH•Score: 7.2AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 10.15%• Percentile: 93%

Techniques & Countermeasures

  • CWE-416•Use After Free

    The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Affected Systems

  • debian•debian_linux

    8.0

  • linux•linux_kernel

    ≥ 2.6.28, < 3.2.97 | ≥ 3.3, < 3.16.52 | ≥ 3.17, < 3.18.86 | ≥ 3.19, < 4.1.48 | ≥ 4.2, < 4.4.104 | ≥ 4.5, < 4.9.60 | ≥ 4.10, < 4.13.11

References (14)