D-Link DSL-2640B B2 EU_4.01B Web Server do_cgi Request out-of-bounds write

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$5k-$25k0.00

Summaryinfo

A vulnerability was found in D-Link DSL-2640B B2 EU_4.01B. It has been declared as critical. Affected by this vulnerability is the function do_cgi of the component Web Server. Executing a manipulation as part of Request can lead to out-of-bounds write. This vulnerability is tracked as CVE-2020-9276. The attack can be launched remotely. No exploit exists. The application of restrictive firewalling is recommended.

Detailsinfo

A vulnerability was found in D-Link DSL-2640B B2 EU_4.01B. It has been declared as critical. This vulnerability affects the function do_cgi of the component Web Server. The manipulation as part of a Request leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered on D-Link DSL-2640B B2 EU_4.01B devices. The function do_cgi(), which processes cgi requests supplied to the device's web servers, is vulnerable to a remotely exploitable stack-based buffer overflow. Unauthenticated exploitation is possible by combining this vulnerability with CVE-2020-9277.

The weakness was disclosed 04/20/2020. This vulnerability was named CVE-2020-9276 since 02/19/2020. The attack can be initiated remotely. Required for exploitation is a single authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 04/21/2020).

Proper firewalling of is able to address this issue.

The entries VDB-154135, VDB-154134, VDB-154133 and VDB-154131 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/19/2020 🔍
04/20/2020 +61 days 🔍
04/21/2020 +1 days 🔍
06/01/2024 +1502 days 🔍

Sourcesinfo

Vendor: dlink.com

Advisory: raelize.com
Status: Not defined

CVE: CVE-2020-9276 (🔍)
GCVE (CVE): GCVE-0-2020-9276
GCVE (VulDB): GCVE-100-154132
See also: 🔍

Entryinfo

Created: 04/21/2020 08:16
Updated: 06/01/2024 09:35
Changes: 04/21/2020 08:16 (39), 04/21/2020 08:21 (17), 06/01/2024 09:35 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

Discussion

 william.brown (+0)
6 years ago
D-Link SIRT :: For Accurate and Up-to-Date information please go to: https://bit.ly/2ytOHez

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