CVE-2017-9103

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 9.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

An issue was discovered in adns before 1.5.2. pap_mailbox822 does not properly check st from adns__findlabel_next. Without this, an uninitialised stack value can be used as the first label length. Depending on the circumstances, an attacker might be able to trick adns into crashing the calling program, leaking aspects of the contents of some of its memory, causing it to allocate lots of memory, or perhaps overrunning a buffer. This is only possible with applications which make non-raw queries for SOA or RP records.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
80%
KEV
Not listed

Published

June 18, 2020

Last Modified

November 21, 2024

Advisory Details (4)

Auto-updated Aug 13, 2026
No patch confirmed yet.
generic

[SECURITY] Fedora 32 Update: adns-1.6.0-1.fc32 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRVHN3GGVNQWAOL3PWC5FLAV7HUESLZR/
generic

[SECURITY] Fedora 31 Update: adns-1.6.0-1.fc31 - package-announce - Fedora mailing-lists

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UGFZ4SPV6KFQK6ZNUZFB5Y32OYFOM5YJ/
generic

adns 1.5.2, adns 1.6.0 - SECURITY FIXES

https://www.chiark.greenend.org.uk/pipermail/adns-announce/2020/000004.html
generic

chiark - git - ianmdlvl - adns.git/summary

http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=adns.git

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
adns—1.6.0-2—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
adns—1.6.0-2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
adns—1.6.0-2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
adns—1.6.0-2—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 25× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 122 total refreshes for this CVE.

  1. 2026-08-20 17:31 UTCOSV refresh
  2. 2026-08-19 16:59 UTCEPSS rescore
  3. 2026-08-18 13:43 UTCEPSS rescore
  4. 2026-08-16 14:51 UTCEPSS rescore
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  14. 2026-08-05 11:41 UTCOSV refresh
  15. 2026-08-02 02:23 UTCEPSS rescore
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  24. 2026-07-23 01:31 UTCEG score recompute
  25. 2026-07-22 22:11 UTCEG score recompute
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  1. 2026-07-22 14:04 UTCEPSS rescore
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  5. 2026-07-19 14:28 UTCEPSS rescore
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  7. 2026-07-19 10:52 UTCOSV refresh
  8. 2026-07-19 02:26 UTCEPSS rescore
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  10. 2026-07-18 10:01 UTCEPSS rescore
  11. 2026-07-16 16:59 UTCEPSS rescore
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  21. 2026-07-09 19:06 UTCEPSS rescore
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  23. 2026-07-07 13:42 UTCEPSS rescore
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  31. 2026-07-02 16:54 UTCEPSS rescore
  32. 2026-07-01 17:31 UTCOSV refresh
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  44. 2026-06-23 21:30 UTCEPSS rescore
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  48. 2026-06-21 14:54 UTCEPSS rescore
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  50. 2026-06-21 01:57 UTCEPSS rescore
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  52. 2026-06-19 19:23 UTCEPSS rescore
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  54. 2026-06-18 17:50 UTCEPSS rescore
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  58. 2026-06-14 23:14 UTCEPSS rescore
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  60. 2026-06-14 00:43 UTCOSV refresh
  61. 2026-06-13 22:58 UTCEPSS rescore
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  63. 2026-06-12 23:09 UTCEPSS rescore
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  67. 2026-06-10 13:19 UTCEPSS rescore
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  70. 2026-06-07 15:22 UTCEPSS rescore
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  72. 2026-06-06 13:45 UTCEPSS rescore
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  74. 2026-06-05 22:44 UTCEPSS rescore
  75. 2026-06-05 22:44 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2017-9103?
CVE-2017-9103 is a critical vulnerability published on June 18, 2020. An issue was discovered in adns before 1.5.2. papmailbox822 does not properly check st from adnsfindlabelnext. Without this, an uninitialised stack value can be used as the first label length. Depending on the circumstances, an attacker might be able to trick adns into crashing the calling program,…
When was CVE-2017-9103 disclosed?
CVE-2017-9103 was first published in the National Vulnerability Database on June 18, 2020, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-9103 actively exploited?
CVE-2017-9103 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 20.3% of all scored CVEs.
What is the CVSS score of CVE-2017-9103?
CVE-2017-9103 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2017-9103?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-9103, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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