VulnerabilityModified

CVE-2022-21826

This body ends up prefixing the next HTTP request sent down that connection, this means when someone loads website attacker may be able to make browser issue a POST to the application, enabling XSS.

MEDIUM 5.4EPSS 45.2%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 45.2%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

Pulse Secure version 9.115 and below may be susceptible to client-side http request smuggling, When the application receives a POST request, it ignores the request's Content-Length header and leaves the POST body on the TCP/TLS socket. This body ends up prefixing the next HTTP request sent down that connection, this means when someone loads website attacker may be able to make browser issue a POST to the application, enabling XSS.

CVSS 3.1: 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
EPSS: 45.23% probability · 99th percentile
CISA KEV: Not listed
Weakness: CWE-444
Affected: ivanti/connect secure · pulsesecure/pulse connect secure
Source: support@hackerone.com

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.