CVE intelligence and bounded remediation
CVE-2023-39542 — A code execution vulnerability exists in the Javascript saveAs API of Foxit Reader 12.1.3.15356
A code execution vulnerability exists in the Javascript saveAs API of Foxit Reader 12.1.3.15356. A specially crafted malformed file can create arbitrary files, which can lead to remote code execution. An attacker needs to trick the user into opening the malicious file to trigger this vulnerability. Exploitation is also possible if a user visits a specially crafted, malicious site if the browser plugin extension is enabled.
- Severity
- High
- CVSS
- 8.8 (3.1)
- Published
- 2023-11-27
- CISA KEV
- Not currently listed
- Ecosystem
- javascript/npm
- Weaknesses
- CWE-73, CWE-610
Affected products
- foxitsoftware / foxit_reader / 12.1.3.15356
Matched remediation archetype
Server-side request forgery and unintended proxying
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
Check exposure
- Inventory server-side URL fetchers, webhooks, importers, previews, redirects, proxies, and protocol handlers reachable from untrusted input.
- Map egress paths to internal services, metadata endpoints, loopback, private address space, and privileged control planes.
- Review DNS resolution, redirect, proxy, credential-forwarding, and URL parsing behavior without requesting sensitive targets.
Remediate safely
- Replace arbitrary destinations with named integrations or a strict allowlist of schemes, hosts, ports, and paths.
- Resolve and validate every destination and redirect hop, then enforce egress policy independently of application checks.
- Remove ambient credentials and sensitive headers from fetchers; apply response size, time, and content limits.
Authoritative sources
Complete CVE record and remediation plan
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