CVE-2018-1000001

Advisory lineage Upstream: 0 Downstream: 15
Modified
Published: 31 Jan 2018, 14:00
Last modified:05 Aug 2024, 12:33

Vulnerability Summary

Overall Risk (default)
medium
49/100
CVSS Score
7.8 HIGH
v3.0 (nvd)
EPSS Score
41.42% HIGH
41% probability +7.74%
KEV
Not listed
Ransomware
No reports
Public exploits
3 found
Dark Web
Not detected

Timeline

31 Jan 2018, 14:00
Published
Vulnerability first disclosed
05 Aug 2024, 12:33
Last Modified
Vulnerability information updated

Description

In glibc 2.26 and earlier there is confusion in the usage of getcwd() by realpath() which can be used to write before the destination buffer leading to a buffer underflow and potential code execution.

CVSS Metrics

  • v3.0•HIGH•Score: 7.8CVSS:3.0/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: 41.42%• Percentile: 97%

Techniques & Countermeasures

  • CWE-787•Out-of-bounds Write

    The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

  • canonical•ubuntu_linux

    12.04 | 14.04 | 16.04 | 17.10

  • gnu•glibc

    ≤ 2.26

  • redhat•enterprise_linux_desktop

    7.0

  • redhat•enterprise_linux_server

    7.0

  • redhat•enterprise_linux_server_aus

    7.6

  • redhat•enterprise_linux_server_eus

    7.6

  • redhat•enterprise_linux_server_tus

    7.6

  • redhat•enterprise_linux_workstation

    7.0

  • redhat•virtualization_host

    4.0

References (10)