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CVE Record

CVE-2017-12087: An exploitable heap overflow vulnerability exists in the tinysvcmdns library version 2016-07-18.

An exploitable heap overflow vulnerability exists in the tinysvcmdns library version 2016-07-18. A specially crafted packet can make the library overwrite an arbitrary amount of data on the heap with attacker controlled values. An attacker needs send a dns packet to trigger this vulnerability.

CriticalCVSS 10Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

Tinysvcmdns 2016-07-18 contains a critical heap overflow. A remote attacker can trigger it by sending a crafted DNS packet, potentially causing code execution, data compromise, or service disruption in software embedding this library.

Executive priority

Treat as urgent if the library is present in exposed products or devices. The technical severity is maximum, but business urgency depends on whether Tinysvcmdns 2016-07-18 exists in your environment.

Technical view

The CVE describes an attacker-controlled heap overwrite in geekman Tinysvcmdns version 2016-07-18. The CVSS 3.0 score is 10.0: network reachable, low complexity, no privileges, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.

Likely exposure

Exposure is likely limited to applications, appliances, or firmware that embed Tinysvcmdns version 2016-07-18 and accept DNS packets from reachable networks. The bundle does not identify downstream products.

Exploitation context

The sources support remote triggerability through a crafted DNS packet. They do not state known active exploitation, and the CVE is not listed as KEV in the provided bundle.

Researcher notes

Key gaps are downstream product mapping, patch status, and exploitation telemetry. Focus on dependency discovery and network reachability. Avoid assuming all mDNS implementations are affected; the evidence names geekman Tinysvcmdns 2016-07-18 only.

Mitigation direction

  • Identify any embedded Tinysvcmdns 2016-07-18 usage in products, firmware, and source trees.
  • Check vendor or project guidance for a fixed release, replacement library, or supported mitigation.
  • Restrict network access to affected DNS or mDNS services where possible.
  • Disable exposed affected services if they are not business-critical.
  • Prioritize compensating controls for internet-facing or untrusted-network exposure.

Validation and detection

  • Search SBOMs, dependency manifests, firmware contents, and repositories for Tinysvcmdns 2016-07-18.
  • Confirm whether any service using the library parses DNS packets from untrusted networks.
  • Review Talos and CVE records for affected version and impact details.
  • Use safe lab testing or existing fuzz results to validate remediation without production exploit attempts.
Prepared
Confidence
medium
Sources
3

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

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CVE-2017-12087 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
10 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
10CVSS 3.0CriticalCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H3.96Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

10Critical
CVSS 3.0 vector shape for CVE-2017-12087Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
geekmanTinysvcmdns2016-07-18Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.