CVE-2020-1618: Junos OS: EX and QFX Series: Console port authentication bypass vulnerability
On Juniper Networks EX and QFX Series, an authentication bypass vulnerability may allow a user connected to the console port to login as root without any password. This issue might only occur in certain scenarios: • At the first reboot after performing device factory reset using the command “request system zeroize”; or • A temporary moment during the first reboot after the software upgrade when the device configured in Virtual Chassis mode. This issue affects Juniper Networks Junos OS on EX and QFX Series: 14.1X53 versions prior to 14.1X53-D53; 15.1 versions prior to 15.1R7-S4; 15.1X53 versions prior to 15.1X53-D593; 16.1 versions prior to 16.1R7-S4; 17.1 versions prior to 17.1R2-S11, 17.1R3-S1; 17.2 versions prior to 17.2R3-S3; 17.3 versions prior to 17.3R2-S5, 17.3R3-S6; 17.4 versions prior to 17.4R2-S9, 17.4R3; 18.1 versions prior to 18.1R3-S8; 18.2 versions prior to 18.2R2; 18.3 versions prior to 18.3R1-S7, 18.3R2. This issue does not affect Juniper Networks Junos OS 12.3.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 14.1X53-D53 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.1X53-D593 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.1R7-S4 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.1R7-S4 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.1R2-S11 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.1R3-S1 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.2R3-S3 - Upgrade
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Fixed in 17.3R2-S5 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 17.3R3-S6 - Upgrade
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Fixed in 17.4R2-S9 - Upgrade
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Fixed in 17.4R3 - Upgrade
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Fixed in 18.1R3-S8 - Upgrade
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Fixed in 18.2R2 - Upgrade
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Fixed in 18.3R1-S7 - Upgrade
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Fixed in 18.3R2 - Upgrade
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Fixed in 18.4R1
Event History
Frequently Asked Questions
What is the severity of CVE-2020-1618?
CVE-2020-1618 is designated as a high severity vulnerability due to its authentication bypass nature.
How do I fix CVE-2020-1618?
To fix CVE-2020-1618, you should update to a fixed version of Juniper JUNOS as provided by the vendor's advisory.
What devices are affected by CVE-2020-1618?
CVE-2020-1618 affects various Juniper EX and QFX Series devices running specific versions of Junos OS.
Can CVE-2020-1618 be exploited remotely?
CVE-2020-1618 requires local access to the console port, reducing the likelihood of remote exploitation.
What actions should be taken if CVE-2020-1618 is identified?
If CVE-2020-1618 is identified, immediate action should include patching the firmware and reviewing access logs for unauthorized activity.