Use After Free

Affecting iproute2 package, versions <4.20.0-r2

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Overview

Affected versions of this package are vulnerable to Use After Free iproute2 before 5.1.0 has a use-after-free in get_netnsid_from_name in ip/ipnetns.c. NOTE: security relevance may be limited to certain uses of setuid that, although not a default, are sometimes a configuration option offered to end users. Even when setuid is used, other factors (such as C library configuration) may block exploitability.

Remediation

Upgrade iproute2 to version or higher.

References

CVSS Score

4.4
medium severity
  • Attack Vector
    Local
  • Attack Complexity
    Low
  • Privileges Required
    High
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    None
  • Availability
    High
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVE
CVE-2019-20795
CWE
CWE-416
Snyk ID
SNYK-ALPINE310-IPROUTE2-588873
Disclosed
09 May, 2020
Published
21 Jul, 2020