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Vulnerability · Published Apr 8, 2020 · Assigned by juniper

CVE-2020-1637Junos OS: SRX Series: Unified Access Control (UAC) bypass vulnerability

High 7.2

In plain English

A high-severity authentication bypass in Junos OS from Juniper Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High
Exploit odds (30 days)0.8%top 42.3% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

VendorProductVersions
Juniper Networks Junos OS 12.3X48 – before 12.3X48-D10015.1X49 – before 15.1X49-D21017.3 – before 17.3R2-S5, 17.3R3-S817.4 – before 17.4R2-S9, 17.4R3-S118.1 – before 18.1R3-S1018.2 – before 18.2R2-S7, 18.2R3-S318.3 – before 18.3R1-S7, 18.3R3-S218.4 – before 18.4R1-S6, 18.4R2-S4, 18.4R3-S1

Weakness: CWE-288 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References