low3.1
CVE-2021-3716
A flaw was found in nbdkit due to to improperly caching plaintext state across the STARTTLS encryption boundary.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Nbdkit Project | Nbdkit | from 1.11.8 before 1.24.6 from 1.25.1 before 1.26.5 from 1.27.1 before 1.27.6 |
| Redhat | Enterprise Linux | Version 8.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://bugzilla.redhat.com/show_bug.cgi?id=1994695
- https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd
- https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8
- https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html
- https://www.openwall.com/lists/oss-security/2021/08/18/2
- https://bugzilla.redhat.com/show_bug.cgi?id=1994695
- https://gitlab.com/nbdkit/nbdkit/-/commit/09a13dafb7bb3a38ab52eb5501cba786365ba7fd
- https://gitlab.com/nbdkit/nbdkit/-/commit/6c5faac6a37077cf2366388a80862bb00616d0d8
- https://listman.redhat.com/archives/libguestfs/2021-August/msg00083.html
- https://www.openwall.com/lists/oss-security/2021/08/18/2