CSS Injection Vulnerability in Swagger UI
CVE-2019-17495

9.8CRITICAL

Key Information:

Vendor

Smartbear

Status
Swagger Ui
Vendor
CVE Published:
10 October 2019

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 11%

What is CVE-2019-17495?

A CSS injection vulnerability in Swagger UI versions before 3.23.11 allows attackers to leverage the Relative Path Overwrite technique. This flaw enables the exfiltration of sensitive values, such as CSRF tokens, by embedding untrusted JSON data from remote servers. An attacker can exploit this vulnerability by exploiting the @import directive within JSON data, an approach that facilitates the unauthorized retrieval of confidential information without the user’s consent.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2019-17495-test
Created by SecT0uch

References

https://www.oracle.com/security-alerts/cpuoct2020.html
x_refsource_MISC
https://github.com/tarantula-team/CSS-injection-in-Swagge...
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https://github.com/swagger-api/swagger-ui/releases/tag/v3...
x_refsource_MISC

EPSS Score

11% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

JSON
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