BrightSign Digital Signage up to 6.2.63 /tools.html File access control

Summaryinfo

A vulnerability classified as critical has been found in BrightSign Digital Signage up to 6.2.63. Affected by this vulnerability is an unknown functionality of the file /tools.html. Performing a manipulation results in access control (File). This vulnerability is identified as CVE-2017-17738. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in BrightSign Digital Signage up to 6.2.63. This affects some unknown processing of the file /tools.html. The manipulation with an unknown input leads to a access control vulnerability (File). CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The BrightSign Digital Signage (4k242) device (Firmware 6.2.63 and below) allows renaming and modifying files via /tools.html.

The bug was discovered 12/15/2017. The weakness was released 12/18/2017 (Website). The advisory is shared at information-paradox.net. This vulnerability is uniquely identified as CVE-2017-17738 since 12/18/2017. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:tools.html it is possible to find vulnerable targets with Google Hacking.

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

The vulnerability is also documented in the vulnerability database at Exploit-DB (43364). Entries connected to this vulnerability are available at VDB-110780 and VDB-110782. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• BrightSign

Name

• Digital Signage

Version

• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3
• 6.2.4
• 6.2.5
• 6.2.6
• 6.2.7
• 6.2.8
• 6.2.9
• 6.2.10
• 6.2.11
• 6.2.12
• 6.2.13
• 6.2.14
• 6.2.15
• 6.2.16
• 6.2.17
• 6.2.18
• 6.2.19
• 6.2.20
• 6.2.21
• 6.2.22
• 6.2.23
• 6.2.24
• 6.2.25
• 6.2.26
• 6.2.27
• 6.2.28
• 6.2.29
• 6.2.30
• 6.2.31
• 6.2.32
• 6.2.33
• 6.2.34
• 6.2.35
• 6.2.36
• 6.2.37
• 6.2.38
• 6.2.39
• 6.2.40
• 6.2.41
• 6.2.42
• 6.2.43
• 6.2.44
• 6.2.45
• 6.2.46
• 6.2.47
• 6.2.48
• 6.2.49
• 6.2.50
• 6.2.51
• 6.2.52
• 6.2.53
• 6.2.54
• 6.2.55
• 6.2.56
• 6.2.57
• 6.2.58
• 6.2.59
• 6.2.60
• 6.2.61
• 6.2.62
• 6.2.63

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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