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CVE-2021-3716

Published: Mar 2, 2022

Modified: Aug 3, 2024

PUBLISHED

Description

A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary. A MitM attacker could use this flaw to inject a plaintext NBD_OPT_STRUCTURED_REPLY before proxying everything else a client sends to the server, potentially leading the client to terminate the NBD session. The highest threat from this vulnerability is to system availability.

Vendor	Product	Versions
n/a	nbdkit	affected `Affects nbdkit v1.12 through v1.26.4 \| Fixedin nbdkit v1.26.5`

Weaknesses (CWE)

References

https://www.openwall.com/lists/oss-security/2021/08/18/2

x_refsource_MISC

https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html

x_refsource_MISC

https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd

x_refsource_MISC

https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8

x_refsource_MISC

https://bugzilla.redhat.com/show_bug.cgi?id=1994695

x_refsource_MISC

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