PT-2021-18199 · Portswigger · Burp Suite

Issuefinder · Published 2021-03-29 · Updated 2022-07-12 · CVE-2021-29416

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions: PortSwigger Burp Suite versions prior to 2021.2

Description: An issue was discovered where viewing a malicious request can be manipulated into issuing a request that does not respect its upstream proxy configuration. This could potentially leak NetNTLM hashes on Windows systems that fail to block outbound SMB.

Recommendations: For versions prior to 2021.2, update to version 2021.2 or later to resolve the issue. As a temporary workaround, consider restricting access to the upstream proxy configuration to minimize the risk of exploitation.

Exploit

Fix

Related Identifiers

CVE-2021-29416

Affected Products

Burp Suite

References · 5

• 🔥 https://hackerone.com/reports/1054382 · Exploit
• https://portswigger.net/burp/releases/professional-community-2020-12?requestededition=professional · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-29416 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-29416 · Security Note
• https://t.me/cvenotify/12678 · Telegram Post