DrayTek Vigor2960/Vigor3900/Vigor300B up to 1.5.1.0 mainfunction.cgi formuserphonenumber 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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8.2$0-$5k0.00

Summaryinfo

A vulnerability was found in DrayTek Vigor2960, Vigor3900 and Vigor300B up to 1.5.1.0 and classified as critical. This vulnerability affects unknown code of the file mainfunction.cgi. The manipulation of the argument formuserphonenumber as part of Parameter results in out-of-bounds write. This vulnerability is reported as CVE-2020-14993. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in DrayTek Vigor2960, Vigor3900 and Vigor300B up to 1.5.1.0 (Router Operating System). It has been classified as critical. Affected is an unknown code of the file mainfunction.cgi. The manipulation of the argument formuserphonenumber as part of a Parameter leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

A stack-based buffer overflow on DrayTek Vigor2960, Vigor3900, and Vigor300B devices before 1.5.1.1 allows remote attackers to execute arbitrary code via the formuserphonenumber parameter in an authusersms action to mainfunction.cgi.

The weakness was disclosed 06/23/2020. This vulnerability is traded as CVE-2020-14993 since 06/23/2020. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

Upgrading to version 1.5.1.1 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Vigor2960/Vigor3900/Vigor300B 1.5.1.1

Timelineinfo

06/23/2020 🔍
06/23/2020 +0 days 🔍
06/24/2020 +1 days 🔍
10/26/2020 +124 days 🔍

Sourcesinfo

Status: Not defined
Confirmation: 🔍

CVE: CVE-2020-14993 (🔍)
GCVE (CVE): GCVE-0-2020-14993
GCVE (VulDB): GCVE-100-157182

Entryinfo

Created: 06/24/2020 09:53
Updated: 10/26/2020 18:57
Changes: 06/24/2020 09:53 (39), 06/24/2020 09:58 (18), 10/26/2020 18:57 (1)
Complete: 🔍
Cache ID: 216::103

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