CVE-2021-46828

libtirpc: DoS vulnerability with lots of connections

Published Jul 20, 2022 CVSS 3.1 · 7.5 High EPSS 3.2% KEV · Not listed
Description
In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-3071-1 libtirpc security update
Debian DSA Debian DSA DSA-5200-1 libtirpc security update
EUVD EUVD EUVD-2021-33483 In libtirpc before 1.3.3rc1, remote attackers could exhaust the file descriptors of a process that uses libtirpc because idle TCP connections are mishandled. This can, in turn, lead to an svc_run infinite loop without accepting new connections.
Ubuntu USN Ubuntu USN USN-5538-1 libtirpc vulnerability
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 14, 2026, 12:12 PM
Reserved
Jul 20, 2022, 12:00 AM
Status
Modified
Published
Jul 20, 2022, 6:15 AM
Modified
Oct 14, 2026, 1:17 PM
Severity
Moderate
Public date
Jul 20, 2022, 12:00 AM