CVE-2017-9105Network attack vector

Code execution via premature nameserver response pointer corruption

Published Jun 18, 2020 · Updated Aug 5, 2024

Pointer corruption in GNU adns before 1.5.2 allows remote attackers controlling the local recursive resolver to execute application code. When a nameserver responds before adns issues its query, the reply path applies the wrong number of pointer dereferences and corrupts a pointer. The attacker must control the configured recursive resolver; successful exploitation runs code with the privileges of an application calling adns.

CVSS severity8.8
High
EPSS probability3.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Pointer corruption in GNU adns before 1.5.2 allows remote attackers controlling the local recursive resolver to execute application code. When a nameserver responds before adns issues its query, the reply path applies the wrong number of pointer dereferences and corrupts a pointer. The attacker must control the configured recursive resolver; successful exploitation runs code with the privileges of an application calling adns.

The record

CVE
CVE-2017-9105
Published
Jun 18, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1203
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 18, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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