The consume_labels function in avahi-core/dns.c in Avahi before 0.6.16 allows remote…
Priority LOW 27Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA.
Summary
The consume_labels function in avahi-core/dns.c in Avahi before 0.6.16 allows remote attackers to cause a denial of service (infinite loop) via a crafted compressed DNS response with a label that points to itself.
Why it matters now
EPSS 0.02437 84th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:avahi:avahi:0.6.7:*:*:*:*:*:*:* | 0.6.7 | Vulnerable | avahi |
| cpe:2.3:a:avahi:avahi:0.6.8:*:*:*:*:*:*:* | 0.6.8 | Vulnerable | avahi |
| cpe:2.3:a:avahi:avahi:0.6.9:*:*:*:*:*:*:* | 0.6.9 | Vulnerable | avahi |
| cpe:2.3:a:avahi:avahi:0.6.10:*:*:*:*:*:*:* | 0.6.10 | Vulnerable | avahi |
| cpe:2.3:a:avahi:avahi:0.6.11:*:*:*:*:*:*:* | 0.6.11 | Vulnerable | avahi |
| cpe:2.3:a:avahi:avahi:0.6.12:*:*:*:*:*:*:* | 0.6.12 | Vulnerable | avahi |
| cpe:2.3:a:avahi:avahi:0.6.13:*:*:*:*:*:*:* | 0.6.13 | Vulnerable | avahi |
| cpe:2.3:a:avahi:avahi:0.6.14:*:*:*:*:*:*:* | 0.6.14 | Vulnerable | avahi |
| cpe:2.3:a:avahi:avahi:0.6.15:*:*:*:*:*:*:* | 0.6.15 | Vulnerable | avahi |
- cpe:2.3:a:avahi:avahi:0.6.7:*:*:*:*:*:*:* Versions 0.6.7 Vulnerable ·avahi
- cpe:2.3:a:avahi:avahi:0.6.8:*:*:*:*:*:*:* Versions 0.6.8 Vulnerable ·avahi
- cpe:2.3:a:avahi:avahi:0.6.9:*:*:*:*:*:*:* Versions 0.6.9 Vulnerable ·avahi
- cpe:2.3:a:avahi:avahi:0.6.10:*:*:*:*:*:*:* Versions 0.6.10 Vulnerable ·avahi
- cpe:2.3:a:avahi:avahi:0.6.11:*:*:*:*:*:*:* Versions 0.6.11 Vulnerable ·avahi
- cpe:2.3:a:avahi:avahi:0.6.12:*:*:*:*:*:*:* Versions 0.6.12 Vulnerable ·avahi
- cpe:2.3:a:avahi:avahi:0.6.13:*:*:*:*:*:*:* Versions 0.6.13 Vulnerable ·avahi
- cpe:2.3:a:avahi:avahi:0.6.14:*:*:*:*:*:*:* Versions 0.6.14 Vulnerable ·avahi
- cpe:2.3:a:avahi:avahi:0.6.15:*:*:*:*:*:*:* Versions 0.6.15 Vulnerable ·avahi
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2006-6870
- 2026-10-03 Alias added: GHSA-mc78-8grw-5ghv
References
More Avahi vulnerabilities
- TI-2026-27157 Avahi: Reachable assertion in `transport_flags_from_domain()` via conflicting publish flags crashes avahi-daemon CVSS 3.1MEDIUM 5.5
- TI-2025-37060 Avahi: simple protocol server ignores accepts unlimited connections and logs failures without limit CVSS 3.1MEDIUM 5.5
- TI-2008-04834 The originates_from_local_legacy_unicast_socket function (avahi-core/server.c) in… CVSS 2.0MEDIUM 5.0
- TI-2017-04303 avahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to IPv6 unicast… CVSS 3.1CRITICAL 9.1
- TI-2011-00862 avahi-core/socket.c in avahi-daemon in Avahi before 0.6.29 allows remote attackers to… CVSS 2.0MEDIUM 5.0
- TI-2021-08399 avahi-daemon-check-dns.sh in the Debian avahi package through 0.8-4 is executed as root… CVSS 3.1HIGH 7.8
Sources
- CVE-2006-6870 · CVE Program
- CVE-2006-6870 · NVD
- FIRST EPSS
- GHSA-mc78-8grw-5ghv · GitHub Advisory Database · CC BY 4.0
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