CVE-2017-6519 (GCVE-0-2017-6519)
Vulnerability from cvelistv5 – Published: 2017-05-01 01:00 – Updated: 2025-12-03 21:57
VLAI
EPSS
VEX
Summary
avahi-daemon in Avahi through 0.6.32 and 0.7 inadvertently responds to IPv6 unicast queries with source addresses that are not on-link, which allows remote attackers to cause a denial of service (traffic amplification) and may cause information leakage by obtaining potentially sensitive information from the responding device via port-5353 UDP packets. NOTE: this may overlap CVE-2015-2809.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-12-03 21:57 UTC
CWE
- n/a
- CWE-346 - Origin Validation Error
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/lathiat/avahi/issues/203#issue… | x_refsource_MISC |
| https://usn.ubuntu.com/3876-1/ | vendor-advisoryx_refsource_UBUNTU |
| https://github.com/lathiat/avahi/issues/203 | x_refsource_MISC |
| https://bugzilla.redhat.com/show_bug.cgi?id=1426712 | x_refsource_MISC |
| https://usn.ubuntu.com/3876-2/ | vendor-advisoryx_refsource_UBUNTU |
| https://www.secfu.net/advisories | x_refsource_MISC |
| https://lists.apache.org/thread.html/r1b103833cb5… | mailing-listx_refsource_MLIST |
Date Public
2017-04-30 00:00
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}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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