In tinysvcmdns through 2018-01-16, a maliciously crafted mDNS (Multicast DNS) packet triggers an infinite loop while parsing an mDNS query
Published Mar 13, 2019
7.5
HIGHCVSS 3.0
EPSS 1.39%
Description
In tinysvcmdns through 2018-01-16, a maliciously crafted mDNS (Multicast DNS) packet triggers an infinite loop while parsing an mDNS query. When mDNS compressed labels point to each other, the function uncompress_nlabel goes into an infinite loop trying to analyze the packet with an mDNS query. As a result, the mDNS server hangs after receiving the malicious mDNS packet. NOTE: the product's web site states "This project is un-maintained, and has been since 2013. ... There are known vulnerabilities ... You are advised to NOT use this library for any new projects / products."
Affected products
No data.
- ≤ 2018-01-16
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.39% (0.01390) | 71.32th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.39% (0.01390) | 71.10th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.08% (0.00084) | 36.08th | v3 (v2023.03.01) |
| Apr 25, 2024 | 0.08% (0.00084) | 34.72th | v3 (v2023.03.01) |
| Mar 15, 2024 | 0.08% (0.00080) | 32.67th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.07% (0.00072) | 28.97th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.14% (0.00138) | 47.58th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Apr 1, 2022 | 0.89% (0.00885) | 24.24th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.46% (0.05463) | 76.57th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.95% (0.01953) | 49.98th | v1 |
| Jan 6, 2022 | 1.95% (0.01953) | 49.47th | v1 |
| Jan 5, 2022 | 0.44% (0.00442) | 28.89th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.44% (0.00442) | 0.00th | v1 |
References (1)
- https://bitbucket.org/geekman/tinysvcmdns/issues/11/denial-of-service-vulnerability-infinite x_refsource_MISCExploitThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://bitbucket.org/geekman/tinysvcmdns/issues/11/denial-of-service-vulnerability-infinite | x_refsource_MISCExploitThird Party Advisory |
Change history (0)
No recorded changes yet.