CVE-2021-46825

Symantec Advanced Secure Gateway (ASG) and ProxySG are susceptible to an HTTP desync vulnerability

published July 7, 2022

CVSS
—
EPSS
2%
Percentile
76.2
In the wild
Unconfirmed
What it is

⚡ A crafty HTTP desync vulnerability lets attackers hijack responses through a proxy! Picture this: your delivery guy accidentally hands your package to the wrong person. Yikes! 📦 Think of it like a restaurant where a waiter mistakenly delivers an order meant for one customer to another table. If the waiter can’t tell who ordered what, sensitive information could end up in the hands of the wrong diner! An attacker could cleverly intercept responses from the web server, leading to sensitive information being revealed to unintended clients. This could expose confidential data, creating a significant security risk for users and the organization. It’s like having an open book for anyone nearby to read!

Put simply

Think of it like a restaurant where a waiter mistakenly delivers an order meant for one customer to another table. If the waiter can’t tell who ordered what, sensitive information could end up in the hands of the wrong diner! This HTTP desync vulnerability in Symantec Advanced Secure Gateway (ASG) and ProxySG allows an unauthenticated attacker to send crafted requests that manipulate the proxy's response behavior, leading to data leakage.

What to do

An attacker could cleverly intercept responses from the web server, leading to sensitive information being revealed to unintended clients. This could expose confidential data, creating a significant security risk for users and the organization. It’s like having an open book for anyone nearby to read! To remediate this, ensure you update your Symantec ASG and ProxySG to the latest patched version. Regularly audit your configurations and consider implementing additional security measures to safeguard against unauthorized access. 🛡️ You've got this! Follow the steps to secure your systems and protect your data! 🚀

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01642 · 76.2th percentile
Published
2022-07-07T15:48Z
EPSS history
Timeline
  • 07 JUL 15:48Z
    Symantec Advanced Secure Gateway (ASG) and ProxySG are susceptible to an HTTP desync vulnerability
    cvelistv5