CVE-2020-1752

Advisory lineage Upstream: 0 Downstream: 11
Modified
Published: 30 Apr 2020, 00:00
Last modified:04 Aug 2024, 06:46

Vulnerability Summary

Overall Risk (default)
medium
28/100
CVSS Score
7 HIGH
v3.1 (cve.org)
EPSS Score
0.15% LOW
0% probability -0.05%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

30 Apr 2020, 00:00
Published
Vulnerability first disclosed
04 Aug 2024, 06:46
Last Modified
Vulnerability information updated

Description

A use-after-free vulnerability introduced in glibc upstream version 2.14 was found in the way the tilde expansion was carried out. Directory paths containing an initial tilde followed by a valid username were affected by this issue. A local attacker could exploit this flaw by creating a specially crafted path that, when processed by the glob function, would potentially lead to arbitrary code execution. This was fixed in version 2.32.

CVSS Metrics

  • v3.1•HIGH•Score: 7CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
  • v2.0•LOW•Score: 3.7AV:L/AC:H/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.15%• Percentile: 35%

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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

  • canonical•ubuntu_linux

    16.04 | 18.04 | 19.10

  • debian•debian_linux

    10.0

  • gnu libc•glibc

    Affected: versions 2.14 and later | Fixed: version 2.32

  • gnu•glibc

    < 2.32.0

  • netapp•active_iq_unified_manager

    ≥ 9.5

  • netapp•h410c_firmware

    na

  • netapp•hci_management_node

    na

  • netapp•solidfire

    na

  • netapp•steelstore_cloud_integrated_storage

    na

References (9)