Vulnerability Details : CVE-2017-2342
MACsec feature on Juniper Networks Junos OS 15.1X49 prior to 15.1X49-D100 on SRX300 series does not report errors when a secure link can not be established. It falls back to an unencrypted link. This can happen when MACsec is configured on ports that are not capable of MACsec or when a secure link can not be established. This can mislead customers into believing that a link is secure. On SRX 300 series devices, prior to 15.1X49-D100, MACsec was only supported on control and fabric ports of SRX340 and SRX345 devices. SRX300 and and SRX320 did not have any MACsec capable ports. Configuring MACsec on ports that were not MACsec capable would have resulted in this issue. Affected releases are Juniper Networks Junos OS 15.1X49 prior to 15.1X49-D100 on SRX300 series.
Products affected by CVE-2017-2342
- cpe:2.3:o:juniper:junos:15.1x49:d10:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d20:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d30:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d35:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d45:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d50:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d55:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d40:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d65:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d75:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d80:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d90:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d60:*:*:*:*:*:*
- cpe:2.3:o:juniper:junos:15.1x49:d70:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-2342
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-2342
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:A/AC:M/Au:N/C:P/I:P/A:N |
5.5
|
4.9
|
NIST | |
|
8.1
|
HIGH | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
2.8
|
5.2
|
NIST | |
|
8.1
|
HIGH | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N |
2.8
|
5.2
|
Juniper Networks, Inc. |
CWE ids for CVE-2017-2342
-
The product encounters an error but does not provide a status code or return value to indicate that an error has occurred.Assigned by: sirt@juniper.net (Secondary)
References for CVE-2017-2342
-
https://kb.juniper.net/JSA10790
Juniper Networks - 2017-07 Security Bulletin: SRX Series: MACsec failure to report errors (CVE-2017-2342)Vendor Advisory
-
http://www.securitytracker.com/id/1038890
Juniper Junos SRX300 Series MACsec Non-Secure Fallback Lets Remote Users Obtain Potentially Sensitive Information on the Target System - SecurityTrackerThird Party Advisory;VDB Entry
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