Ubuntu.comUB:CVE-2021-3716CVE-2021-3716
3.1 Low
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
3.5 Low
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
41.9%
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.
Bugs
Notes
| Author | Note |
|---|---|
| sbeattie | introduced in eaa4c6e9a (v1.11.8) |
Related
3.1 Low
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
3.5 Low
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:N/I:N/A:P
0.001 Low
EPSS
Percentile
41.9%