ZyXEL VMG3312-B10B 1.00(AAPP.7) etc/default.cfg Password credentials management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in ZyXEL VMG3312-B10B 1.00(AAPP.7). The impacted element is an unknown function of the file etc/default.cfg. This manipulation with the input tTn3+Z@!Sr0O+ as part of Password causes credentials management. This vulnerability is tracked as CVE-2018-18754. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in ZyXEL VMG3312-B10B 1.00(AAPP.7) and classified as critical. Affected by this vulnerability is an unknown code of the file etc/default.cfg. The manipulation with the input value tTn3+Z@!Sr0O+ leads to a credentials management vulnerability. The CWE definition for the vulnerability is CWE-255. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

ZyXEL VMG3312-B10B 1.00(AAPP.7) devices have a backdoor root account with the tTn3+Z@!Sr0O+ password hash in the etc/default.cfg file.

The bug was discovered 10/28/2018. The weakness was disclosed 10/28/2018 (Website). It is possible to read the advisory at gist.github.com. This vulnerability is known as CVE-2018-18754 since 10/28/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/07/2020). The attack technique deployed by this issue is T1552 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
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: Credentials management
CWE: CWE-255
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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/28/2018 🔍
10/28/2018 +0 days 🔍
10/28/2018 +0 days 🔍
10/29/2018 +0 days 🔍
10/29/2018 +0 days 🔍
04/07/2020 +526 days 🔍

Sourcesinfo

Vendor: zyxel.com

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2018-18754 (🔍)
GCVE (CVE): GCVE-0-2018-18754
GCVE (VulDB): GCVE-100-126067

Entryinfo

Created: 10/29/2018 16:44
Updated: 04/07/2020 11:49
Changes: 10/29/2018 16:44 (59), 04/07/2020 11:49 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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