ISC BIND 9.10.0 EDNS Option input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as critical has been found in ISC BIND 9.10.0 (Domain Name Software). This affects an unknown functionality of the component EDNS Option Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability.

The weakness was released 06/11/2014 with Codenomicon as AA-01166 as confirmed advisory (Website). The advisory is shared at This vulnerability is uniquely identified as CVE-2014-3859 since 05/25/2014. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The advisory points out:

Both authoritative and recursive servers are vulnerable to this defect. Exploitation of this condition can cause a denial of service in nameservers running affected versions of BIND 9.10.

The vulnerability scanner Nessus provides a plugin with the ID 74495 (ISC BIND 9 EDNS Processing DoS), which helps to determine the existence of the flaw in a target environment. It is assigned to the family DNS and relying on port 53.

Upgrading to version 9.10.0-P2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

Access Control Lists do not provide protection.
Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 16464.

The vulnerability is also documented in the databases at X-Force (93770), SecurityTracker (ID 1030414), Vulnerability Center (SBV-44985) and Tenable (74495). Further details are available at Entry connected to this vulnerability is available at 13180.





CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
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VulDB Base Score: 🔍
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Class: Privilege escalation
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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EPSS Percentile: 🔍

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Current Price Estimation: 🔍


Nessus ID: 74495
Nessus Name: ISC BIND 9 EDNS Processing DoS
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
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Exposure Time: 🔍

Upgrade: BIND 9.10.0-P2
TippingPoint: 🔍
ISS Proventia IPS: 🔍
Fortigate IPS: 🔍


05/25/2014 🔍
06/11/2014 +17 days 🔍
06/11/2014 +0 days 🔍
06/11/2014 +0 days 🔍
06/11/2014 +0 days 🔍
06/12/2014 +1 days 🔍
06/12/2014 +0 days 🔍
06/12/2014 +0 days 🔍
06/13/2014 +1 days 🔍
06/15/2014 +2 days 🔍
06/22/2021 +2564 days 🔍



Advisory: AA-01166
Organization: Codenomicon
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-3859 (🔍)

X-Force: 93770 - ISC BIND EDNS option denial of service, High Risk
SecurityTracker: 1030414 - ISC BIND EDNS Option Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 44985 - ISC BIND 9.10.0 Remote DoS Vulnerability in Libdns, High
SecurityFocus: 68038 - ISC BIND CVE-2014-3859 Remote Denial of Service Vulnerability
Secunia: 58946

Misc.: 🔍
See also: 🔍


Created: 06/12/2014 11:21 PM
Updated: 06/22/2021 07:57 PM
Changes: (1) source_nessus_risk
Complete: 🔍


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