A vulnerability in Juniper Networks SRX Series device configured as a Junos OS Enforcer device may allow a user to access network resources that are not permitted by a UAC policy.
This issue might occur when the IP address range configured in the Infranet Controller (IC) is configured as an IP address range instead of an IP address/netmask. See the Workaround section for more detail.
The Junos OS Enforcer CLI settings are disabled by default.
This issue affects Juniper Networks Junos OS on SRX Series:
12.3X48 versions prior to 12.3X48-D100;
15.1X49 versions prior to 15.1X49-D210;
17.3 versions prior to 17.3R2-S5, 17.3R3-S8;
17.4 versions prior to 17.4R2-S9, 17.4R3-S1;
18.1 versions prior to 18.1R3-S10;
18.2 versions prior to 18.2R2-S7, 18.2R3-S3;
18.3 versions prior to 18.3R1-S7, 18.3R3-S2;
18.4 versions prior to 18.4R1-S6, 18.4R2-S4, 18.4R3-S1;
19.1 versions prior to 19.1R1-S4, 19.1R2-S1, 19.1R3;
19.2 versions prior to 19.2R1-S3, 19.2R2;
19.3 versions prior to 19.3R2-S1, 19.3R3;
19.4 versions prior to 19.4R1-S1, 19.4R2.
Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
This issue was seen during production usage.
This issue has been assigned CVE-2020-1637 .
The following software releases have been updated to resolve this specific issue: 12.3X48-D100, 15.1X49-D210, 16.1R7-S7, 17.3R2-S5, 17.3R3-S8, 17.4R2-S9, 17.4R3-S1, 18.1R3-S10, 18.2R2-S7, 18.2R3-S3, 18.3R1-S7, 18.3R3-S2, 18.4R1-S6, 18.4R2-S4, 18.4R3-S1, 19.1R1-S4, 19.1R2-S1, 19.1R3, 19.2R1-S3, 19.2R2, 19.3R2-S1, 19.3R3, 19.4R1-S1, 19.4R2, 20.1R1, and all subsequent releases.
This issue is being tracked as 1475435 .
Software Releases, patches and updates are available at https://www.juniper.net/support/downloads/ .
To avoid this issue, the IP address configuration in the IC Server should be configured as IP address/netmask, rather than an IP address range.
For example: configure 10.0.0.0/25 instead of 10.0.0.1-127.
2020-04-08: Initial publication