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What are they looking for? Scans for OpenID Connect Configuration (Update: CitrixBleed), (Tue, Dec 19th)

published on 2023-12-20 00:03:45 UTC by
Content:

Update: Thanks to our reader Dustin Decker for pointing out that these scans are likely looking for Citrix devices. The recent "CitrixBleed" vulnerability is exploited using the OpenID connect URL (%%cve:2023-4966%%, %%cve:2023-4967%%). An attack would also include an oversized Host header in a request to the OpenID URL. The scans I have observed do not appear to include this oversized Host header. Looks like they are just looking for possible targets to exploit later.

Article: What are they looking for? Scans for OpenID Connect Configuration (Update: CitrixBleed), (Tue, Dec 19th) - published 6 months ago.

https://isc.sans.edu/diary/rss/30498
Published: 2023 12 20 00:03:45
Received: 2023 12 20 00:15:20
Feed: SANS Internet Storm Center, InfoCON: green
Source: SANS Internet Storm Center, InfoCON: green
Category: Alerts
Topic: Vulnerabilities
Views: 8