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TI-2023-01864 Aliases CVE-2023-1981GHSA-55h6-xcvg-4r99

Uncontrolled resource consumption in avahi

Priority LOW 25CWE-400Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 6 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-400.

Summary

A vulnerability was found in the avahi library. This flaw allows an unprivileged user to make a dbus call, causing the avahi daemon to crash.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00386 32nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 6 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
—avahiavahi-0.7-20—No fix listedCNA
  • avahi Vendor— Affected avahi-0.7-20 Fixed in — No fix listed CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:a:avahi:avahi:0.7-20:*:*:*:*:*:*:*0.7-20Vulnerableavahi
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*37VulnerableFedoraproject
cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*6.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*9.0VulnerableRed Hat
  • cpe:2.3:a:avahi:avahi:0.7-20:*:*:*:*:*:*:* Versions 0.7-20 Vulnerable ·avahi
  • cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat

Remediation

Red Hat 2 advisories

  • RHSA-2023:7190 Released 2023-11-14 · Red Hat rating Moderate
    avahi security update
    • Red Hat CodeReady Linux Builder (v. 8) avahi-compat-howl-0.7-21.el8, avahi-compat-howl-devel-0.7-21.el8, avahi-compat-libdns_sd-0.7-21.el8 +6
    • Red Hat Enterprise Linux AppStream (v. 8) avahi-tools-0.7-21.el8, avahi-ui-gtk3-0.7-21.el8
    • Red Hat Enterprise Linux BaseOS (v. 8) avahi-0.7-21.el8, avahi-autoipd-0.7-21.el8, avahi-glib-0.7-21.el8 +3
  • RHSA-2023:6707 Released 2023-11-07 · Red Hat rating Moderate
    avahi security update
    • Red Hat CodeReady Linux Builder (v. 9) avahi-compat-howl-0.8-15.el9, avahi-compat-howl-devel-0.8-15.el9, avahi-compat-libdns_sd-0.8-15.el9 +3
    • Red Hat Enterprise Linux AppStream (v. 9) avahi-glib-0.8-15.el9, avahi-tools-0.8-15.el9
    • Red Hat Enterprise Linux BaseOS (v. 9) avahi-0.8-15.el9, avahi-libs-0.8-15.el9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat CodeReady Linux Builder (v. 8)Fixed RHSA-2023:7190
Red Hat CodeReady Linux Builder (v. 9)Fixed RHSA-2023:6707
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2023:7190
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2023:6707
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2023:7190
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2023:6707

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-1981
  2. 2026-10-03 Alias added: GHSA-55h6-xcvg-4r99

References

Exploit 1

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences