Unbound up to 1.9.3 NOTIFY Query Source IP Address memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Unbound up to 1.9.3. This vulnerability affects unknown code of the component NOTIFY Query Handler. The manipulation as part of Source IP Address leads to memory corruption. This vulnerability is uniquely identified as CVE-2019-16866. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Unbound up to 1.9.3. It has been rated as problematic. This issue affects an unknown code of the component NOTIFY Query Handler. The manipulation as part of a Source IP Address leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. The summary by CVE is:

Unbound before 1.9.4 accesses uninitialized memory, which allows remote attackers to trigger a crash via a crafted NOTIFY query. The source IP address of the query must match an access-control rule.

The weakness was disclosed 10/03/2019 (Website). The advisory is shared at seclists.org. The identification of this vulnerability is CVE-2019-16866 since 09/25/2019. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

Upgrading to version 1.9.4 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Unbound 1.9.4

Timelineinfo

09/25/2019 🔍
10/03/2019 +8 days 🔍
10/04/2019 +1 days 🔍
01/03/2024 +1552 days 🔍

Sourcesinfo

Advisory: USN-4149-1
Status: Not defined

CVE: CVE-2019-16866 (🔍)
GCVE (CVE): GCVE-0-2019-16866
GCVE (VulDB): GCVE-100-142937

Entryinfo

Created: 10/04/2019 09:16
Updated: 01/03/2024 12:08
Changes: 10/04/2019 09:16 (55), 09/21/2020 11:07 (1), 01/03/2024 12:08 (4)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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