serverlyr on Node.js URL path traversal

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in serverlyr on Node.js. This issue affects some unknown processing of the component URL Handler. The manipulation with the input ../ leads to path traversal. This vulnerability is uniquely identified as CVE-2017-16089. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in serverlyr on Node.js (JavaScript Library) (affected version unknown) and classified as critical. This issue affects an unknown functionality of the component URL Handler. The manipulation with the input value ../ leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, and integrity. The summary by CVE is:

serverlyr is a simple http server. serverlyr is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing "../" in the URL.

The bug was discovered 08/30/2017. The weakness was disclosed 06/07/2018 (Website). The advisory is shared at github.com. The identification of this vulnerability is CVE-2017-16089 since 10/29/2017. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 280 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.

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

Productinfo

Type

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: Path traversal
CWE: CWE-22
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

08/30/2017 🔍
10/29/2017 +60 days 🔍
06/06/2018 +219 days 🔍
06/07/2018 +1 days 🔍
06/07/2018 +0 days 🔍
02/15/2020 +618 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2017-16089 (🔍)
GCVE (CVE): GCVE-0-2017-16089
GCVE (VulDB): GCVE-100-119057

Entryinfo

Created: 06/07/2018 10:12
Updated: 02/15/2020 17:28
Changes: 06/07/2018 10:12 (57), 02/15/2020 17:28 (1)
Complete: 🔍
Cache ID: 216::103

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

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