Yay. Another security alert bulletin seems to bring down the Citrix support site. Anyone able to give a brief synopsis of what the CVE-2024-3661 bulletin is about?

I clicked on it immediately and "no healthy upstream" is what I get. Was thinking we were about due for another one of these, seems like an every 6 months or so thing

Seems like this CVE is not especially NetScaler specific. Nist has some links and the vuln is described as potentially affecting VPNs in general. https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://nvd.nist.g[…]eGAxVfM1kFHQ-iAxYQFnoECBgQAQ&usg=AOvVaw2ILhtlLCT2OhTdevCBGIIx

Bing search to the rescue, since I can't get cached pages out of Google search anymore and Internet Archive doesn't have it indexed yet. Enter the URL in Bing search, click on the 3 dots behind the link in the search results and click "cached": (without guarantees of course that Citrix didn't change the article in the meantime) Applicable Products • NetScaler Gateway • NetScaler Cloud Software Group has evaluated the impact of vulnerability CVE-2024-3661 on our products. This vulnerability may allow an attacker on the same local network as the victim to read, disrupt, or modify network traffic expected to be protected by the VPN. Please find below the impact status: 1. Citrix Secure Access client for Windows ◦ Status: Not impacted 2. Citrix Secure Access client for Android ◦ Status: Not impacted 3. Citrix Secure Access client for Linux ◦ Status: Impacted - A fix addressing this issue will be released in an upcoming release. 4. Citrix Secure Access client for Mac/iOS • Customers using MDM (Mobile Device Management): ▪︎ Status: Impacted • Recommendation: • Install the latest update listed below as soon as possible to reduce the risk of exploitation: 24.06.1 • AND ▪︎ set ‘EnforceRoutes’ to ‘1’ in the managed VPN configuration • Mitigating factors/Workaround: • Configure the settings listed below to reduce the risk of exploitation: ◦ set ‘EnforceRoutes’ to ‘1’ in the managed VPN configuration and Local LAN access to ‘OFF’ on the Gateway • Customers not using MDM (Mobile Device Management): ▪︎ Status: Impacted • Recommendation: ▪︎ Install the latest update listed below as soon as possible to reduce the risk of exploitation: 24.06.1 • Mitigating factors/Workaround: ◦ Configure the settings listed below to reduce the risk of exploitation: set Local LAN access to ‘OFF’ on the Gateway

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if we're not using secure access client then no action is required, correct?

@Felix Marte yeah that one was on our radar recently for the firewall based VPN some users leverage instead of Citrix. Seems like if you're ICA proxy only it's not going to affect you.

And even if you are, just turn off local LAN access on your Mac clients until there is a fix.

nice thanks for the clarification