CVE-2023-50923 Information disclosure in n/a
Remote attackers can establish a covert channel by manipulating the Latency Spin Bit in QUIC, potentially leaking sensitive information.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-50923?
CVE-2023-50923 is a medium-severity vulnerability in n/a, published on 20 Feb 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In QUIC in RFC 9000, the Latency Spin Bit specification (section 17.4) does not strictly constrain the bit value when the feature is disabled, which might allow remote attackers to construct a covert channel with data represented as changes to the bit value. NOTE: The "Sheridan, S., Keane, A. (2015). In Proceedings of the 14th European Conference on Cyber Warfare and Security (ECCWS), University of Hertfordshire, Hatfield, UK." paper says "Modern Internet communication protocols provide an almost infinite number of ways in which data can be hidden or embed whithin seemingly normal network traffic."
Weakness: CWE-352
Which versions are affected by CVE-2023-50923?
How do I fix CVE-2023-50923?
No fix has been published for CVE-2023-50923 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-50923 being exploited?
There is no known exploitation of CVE-2023-50923 in the wild and no public exploit code.
Sources
Also known as GHSA-48f4-cx87-w7mh.