Vulnerability in Juniper Junos
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.
EPSS: 0.006 (45.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Juniper Junos — versions 15.1x49
- Juniper Srx300
- Juniper Networks Junos Os — versions 15.1X49 prior to 15.1X49-D100
Weakness classification (CWE)
References
- sirt@juniper.net (x_refsource_CONFIRM, Vendor Advisory)
- sirt@juniper.net (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
Frequently asked questions
- What is CVE-2017-2342?
- CVE-2017-2342 is a high-severity vulnerability in Juniper Junos, classified under CWE-392. CVSS score: 8.1/10. Published 2017-07-17.
- How severe is CVE-2017-2342?
- High severity. CVSS v3 base score is 8.1 out of 10.