CVE-2023-40457

Description

The BGP daemon in Extreme Networks ExtremeXOS (aka EXOS) 30.7.1.1 allows an attacker (who is not on a directly connected network) to cause a denial of service (BGP session reset) because of BGP attribute error mishandling (for attribute 21 and 25). NOTE: the vendor disputes this because it is "evaluating support for RFC 7606 as a future feature" and believes that "customers that have chosen to not require or implement RFC 7606 have done so willingly and with knowledge of what is needed to defend against these types of attacks."

Category

N/A
CVSS
Severity:
EPSS 0.10%
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://supportdocs.extremenetworks.com/support/documentation/extremexos-32-5/
https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handling
https://blog.benjojo.co.uk/asset/JgH8G5duO1

Frequently Asked Questions

What is the severity of CVE-2023-40457?
CVE-2023-40457 has not yet been assigned a CVSS score.
How to fix CVE-2023-40457?
To fix CVE-2023-40457, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-40457 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-40457 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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