CVE-2023-54402 iDocView CVE debrief

Who should care

Defenders responsible for iDocView deployments should assess exposure and prioritize verification of the /doc/upload endpoint, URL scheme handling, and hardcoded token removal or securing.

Why it matters

CVE-2023-54402 is a server-side request forgery vulnerability in iDocView's /doc/upload endpoint that allows remote unauthenticated attackers to fetch arbitrary URLs by supplying a hardcoded default token value. Defenders should prioritize verifying the presence of the /doc/upload endpoint, checking for hardcoded tokens, and restricting URL scheme handling to prevent exploitation.

• Read arbitrary local files such as operating-system and application configuration files.
• Reach internal network hosts and services not otherwise accessible.
• Verify the presence of the /doc/upload endpoint and restrict access to it.
• Check for hardcoded tokens and remove or secure them.

Technical summary

The iDocView application contains a server-side request forgery vulnerability in its /doc/upload endpoint. This vulnerability allows remote unauthenticated attackers to fetch arbitrary URLs by supplying a hardcoded default token value (testtoken) to bypass authentication. The unrestricted URL scheme handling, including file:// URIs, allows attackers to read arbitrary local files such as operating-system and application configuration files, and to reach internal network hosts and services not otherwise accessible.

Defensive priority

Defenders should prioritize verifying the presence of the /doc/upload endpoint, checking for hardcoded tokens, and restricting URL scheme handling to prevent exploitation.

Recommended defensive actions

• Verify the presence of the /doc/upload endpoint and restrict access to it.
• Check for hardcoded tokens and remove or secure them.
• Restrict URL scheme handling to prevent exploitation.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Review compensating controls for exposed systems while remediation is scheduled and verified.

Evidence notes

The vulnerability was reported by the Shadowserver Foundation on 2024-03-26. The CVE Program record and NVD vulnerability detail provide additional information. Evidence is limited to the supplied source corpus and CVE record. Defenders should verify the presence of the /doc/upload endpoint and check for hardcoded tokens to confirm exposure.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.