Modified
This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
Current Description
In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer that's too small. A malicious DNS server can exploit this via a response with a specially crafted TCP payload to trick systemd-resolved into allocating a buffer that's too small, and subsequently write arbitrary data beyond the end of it.
Source:
MITRE
Description Last Modified:
06/28/2017
View Analysis Description
Analysis Description
In systemd through 233, certain sizes passed to dns_packet_new in systemd-resolved can cause it to allocate a buffer that's too small. A malicious DNS server can exploit this via a response with a specially crafted TCP payload to trick systemd-resolved into allocating a buffer that's too small, and subsequently write arbitrary data beyond the end of it.
Source:
MITRE
Description Last Modified:
06/28/2017
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:N/A:H
(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):
None
Availability (A):
High
CVSS v2.0 Severity and Metrics:
Base Score:
5.0 MEDIUM
Vector:
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
(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):
None
Availability (A):
Partial
Additional Information:
Allows disruption of service
References to Advisories, Solutions, and Tools
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Change History
3 change records found
- show changes
CVE Modified by MITRE -
7/6/2017 9:29:05 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
http://www.securitytracker.com/id/1038806 [No Types Assigned] |
Initial Analysis -
7/5/2017 11:43:24 AM
| Action |
Type |
Old Value |
New Value |
| Added |
CPE Configuration |
|
OR
*cpe:2.3:a:freedesktop:systemd:233:*:*:*:*:*:*:* (and previous) |
| Added |
CVSS V2 |
|
(AV:N/AC:L/Au:N/C:N/I:N/A:P) |
| Added |
CVSS V3 |
|
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| Added |
CWE |
|
CWE-787 |
| Changed |
Reference Type |
http://openwall.com/lists/oss-security/2017/06/27/8 No Types Assigned |
http://openwall.com/lists/oss-security/2017/06/27/8 Mailing List, Patch, Third Party Advisory |
| Changed |
Reference Type |
http://www.securityfocus.com/bid/99302 No Types Assigned |
http://www.securityfocus.com/bid/99302 Third Party Advisory, VDB Entry |
| Changed |
Reference Type |
https://launchpad.net/bugs/1695546 No Types Assigned |
https://launchpad.net/bugs/1695546 Broken Link |
CVE Modified by MITRE -
6/29/2017 9:29:00 PM
| Action |
Type |
Old Value |
New Value |
| Added |
Reference |
|
http://www.securityfocus.com/bid/99302 [No Types Assigned] |