Dlink DIR-823 HNAP Login XML Tag memory corruption

HistoryDiffrelatejsonxmlCTI

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.
6.1	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in Dlink DIR-823, DIR-822, DIR-818L(W), DIR-895L, DIR-890L, DIR-885L, DIR-880L and DIR-868L. Affected is an unknown function of the component HNAP Login. This manipulation as part of XML Tag causes memory corruption. There is no available exploit.

Detailsinfo

A vulnerability has been found in Dlink DIR-823, DIR-822, DIR-818L(W), DIR-895L, DIR-890L, DIR-885L, DIR-880L and DIR-868L and classified as critical. Affected by this vulnerability is an unknown code of the component HNAP Login. The manipulation as part of a XML Tag leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 11/07/2016 by Pedro Ribeiro with Agile Information Security as [CVE-2016-6563 / VU#677427]: Dlink DIR routers HNAP Login stack buffer overflow as not defined mailinglist post (Full-Disclosure). The advisory is shared at seclists.org. The public release happened without involvement of Dlink. The exploitation appears to be easy. The attack needs to be initiated within the local network. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The mailinglist post contains the following remark:

Dlink did not respond to my or CERT's request for information, so no firmware fix is available at the time of writing. Given that this vulnerability can only be exploited in the LAN, it is recommended to have a strong wireless password to prevent untrusted clients from connecting to the router.

See VDB-121445 for similar entry. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Dlink

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 6.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

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

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/07/2016 🔍
11/09/2016 +2 days 🔍
05/28/2019 +929 days 🔍

Sourcesinfo

Advisory: [CVE-2016-6563 / VU#677427]: Dlink DIR routers HNAP Login stack buffer overflow
Researcher: Pedro Ribeiro
Organization: Agile Information Security
Status: Not defined

GCVE (VulDB): GCVE-100-93433
See also: 🔍

Entryinfo

Created: 11/09/2016 11:42
Updated: 05/28/2019 00:18
Changes: 11/09/2016 11:42 (42), 05/28/2019 00:18 (1)
Complete: 🔍
Cache ID: 216:8B9:103

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