Insufficient Proxy Configuration in Burp Suite Affects PortSwigger Products
CVE-2021-29416

6.5MEDIUM

Key Information:

Vendor

Portswigger

Status
Burp Suite
Vendor
CVE Published:
29 March 2021

What is CVE-2021-29416?

An issue has been identified in PortSwigger's Burp Suite that allows a maliciously crafted request to circumvent the application's upstream proxy settings. This behavior can result in unintended exposure of sensitive NetNTLM hashes from Windows systems, particularly those that do not restrict outbound SMB traffic. Users may inadvertently leak critical security details when interacting with affected versions of the software.

References

https://hackerone.com/reports/1054382
x_refsource_MISC
https://portswigger.net/burp/releases/professional-commun...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.