CVE-2018-19591

Advisory lineage Upstream: 0 Downstream: 4
Modified
Published: 04 Dec 2018, 16:00
Last modified:03 Dec 2025, 19:13

Vulnerability Summary

Overall Risk (default)
medium
40/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
1.77% LOW
2% probability +0.32%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

04 Dec 2018, 16:00
Published
Vulnerability first disclosed
03 Dec 2025, 19:13
Last Modified
Vulnerability information updated

Description

In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 1.77%• Percentile: 83%

Techniques & Countermeasures

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

  • CWE-404•Improper Resource Shutdown or Release

    The product does not release or incorrectly releases a resource before it is made available for re-use.

Affected Systems

  • fedoraproject•fedora

    28 | 29

  • gnu•glibc

    ≤ 2.28

References (11)