Current Description
A vulnerability was found in the implementation of DNSSEC in Dnsmasq up to and including 2.78. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist.
Source:
MITRE
Description Last Modified:
01/23/2018
View Analysis Description
Analysis Description
A vulnerability was found in the implementation of DNSSEC in Dnsmasq up to and including 2.78. Wildcard synthesized NSEC records could be improperly interpreted to prove the non-existence of hostnames that actually exist.
Source:
MITRE
Description Last Modified:
01/23/2018
Impact
CVSS v3.0 Severity and Metrics:
Base Score:
7.5 HIGH
Vector:
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
(V3 legend)
Impact Score:
3.6
Exploitability Score:
3.9
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
High
Availability (A):
None
CVSS v2.0 Severity and Metrics:
Base Score:
5.0 MEDIUM
Vector:
(AV:N/AC:L/Au:N/C:N/I:P/A:N)
(V2 legend)
Impact Subscore:
2.9
Exploitability Subscore:
10.0
Access Vector (AV):
Network
Access Complexity (AC):
Low
Authentication (AU):
None
Confidentiality (C):
None
Integrity (I):
Partial
Availability (A):
None
Additional Information:
Allows unauthorized modification
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Change History
2 change records found
- show changes
Initial Analysis -
2/12/2018 1:41:13 PM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:* versions up to (including) 2.78 |
| Added |
CVSS V2 |
|
(AV:N/AC:L/Au:N/C:N/I:P/A:N) |
| Added |
CVSS V3 |
|
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| Added |
CWE |
|
CWE-284 |
| Changed |
Reference Type |
http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2018q1/011896.html No Types Assigned |
http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2018q1/011896.html Vendor Advisory |
| Changed |
Reference Type |
http://www.securityfocus.com/bid/102812 No Types Assigned |
http://www.securityfocus.com/bid/102812 Third Party Advisory, VDB Entry |
CVE Modified by MITRE -
1/26/2018 9:29:01 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
http://www.securityfocus.com/bid/102812 [No Types Assigned] |