VDB-174140 · CVE-2019-25034 · GCVE-0-2019-25034

Unbound up to 1.9.4 sldns_str2wire_dname_buf_origin out-of-bounds write ⚔ [Disputed]

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.5	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Unbound up to 1.9.4. Affected is the function sldns_str2wire_dname_buf_origin. Such manipulation leads to out-of-bounds write. This vulnerability is referenced as CVE-2019-25034. No exploit is available. The actual existence of this vulnerability is currently in question. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Unbound up to 1.9.4. It has been rated as critical. Affected by this issue is the function sldns_str2wire_dname_buf_origin. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was published 04/27/2021. The advisory is shared for download at ostif.org. This vulnerability is handled as CVE-2019-25034. There are known technical details, but no exploit is available.

The real existence of this vulnerability is still doubted at the moment.

Upgrading to version 1.9.5 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Unbound

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Unbound 1.9.5

Timelineinfo

04/27/2021 🔍
04/27/2021 +0 days 🔍
04/27/2021 +0 days 🔍
08/05/2024 +1196 days 🔍

Sourcesinfo

Advisory: ostif.org
Status: Confirmed
Disputed: 🔍

CVE: CVE-2019-25034 (🔍)
GCVE (CVE): GCVE-0-2019-25034
GCVE (VulDB): GCVE-100-174140

Entryinfo

Created: 04/27/2021 16:34
Updated: 08/05/2024 10:05
Changes: 04/27/2021 16:34 (37), 05/02/2021 08:19 (5), 05/02/2021 08:21 (18), 08/05/2024 10:05 (18)
Complete: 🔍
Cache ID: 216::103