CVE-2021-46825 Other in Advance Secure Gateway and ProxySG

Critical 9.1 Published Updated

Remote attackers can exploit HTTP desync in Symantec ASG and ProxySG to intercept or modify web traffic between clients and servers.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-46825?

CVE-2021-46825 is a critical vulnerability in Advance Secure Gateway and ProxySG, published on 7 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Symantec Advanced Secure Gateway (ASG) and ProxySG are susceptible to an HTTP desync vulnerability. When a remote unauthenticated attacker and other web clients communicate through the proxy with the same web server, the attacker can send crafted HTTP requests and cause the proxy to forward web server responses to unintended clients. Severity/CVSSv3: High / 8.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N

Weakness: CWE-444

Which versions are affected by CVE-2021-46825?

It affects 2 products.

Products include Broadcom Advanced Secure Gateway, Broadcom Proxysg.

How do I fix CVE-2021-46825?

No fix has been published for CVE-2021-46825 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-46825 being exploited?

There is no known exploitation of CVE-2021-46825 in the wild and no public exploit code.

Sources

Also known as GHSA-2h97-8375-29wg.

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