VDB-118475 · CVE-2018-11627 · Qualys 277350

Sinatra up to 2.0.1 400 Page Request cross site scripting

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.9$0-$5k0.00

A vulnerability was found in Sinatra up to 2.0.1. It has been rated as problematic. This issue affects an unknown function of the component 400 Page. The manipulation as part of a Request leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. Impacted is integrity. An attacker might be able to inject arbitrary html and script code into the web site. This would alter the appearance and would make it possible to initiate further attacks against site visitors.

The bug was discovered 05/21/2018. The weakness was published 05/31/2018 (Website). It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2018-11627 since 05/31/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 10 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 110667 (Fedora 27 : 1:rubygem-sinatra (2018-0b17e1e529)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277350 (Fedora Security Update for rubygem-sinatra (FEDORA-2018-0b17e1e529)).

Upgrading to version 2.0.2 eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (110667).

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VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 4.9

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

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Exploitinginfoedit

Class: Cross site scripting
CWE: CWE-79
ATT&CK: T1059.007

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 110667
Nessus Name: Fedora 27 : 1:rubygem-sinatra (2018-0b17e1e529)
Nessus File: 🔍
Nessus Risk: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Upgrade: Sinatra 2.0.2

Timelineinfoedit

05/21/2018 🔍
05/31/2018 +9 days 🔍
05/31/2018 +0 days 🔍
05/31/2018 +0 days 🔍
06/01/2018 +1 days 🔍
06/23/2018 +22 days 🔍
06/25/2018 +2 days 🔍
02/10/2020 +595 days 🔍

Sourcesinfoedit

Advisory: github.com
Status: Not defined

CVE: CVE-2018-11627 (🔍)

Entryinfoedit

Created: 06/01/2018 10:34 AM
Updated: 02/10/2020 04:40 PM
Changes: (2) vulnerability_discoverydate countermeasure_date
Complete: 🔍

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