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CVE-2020-5259

Code Injection in dojox (CVE-2020-5259)

Summary

Code injection in dojox (CVE-2020-5259). Confidential information can be exposed externally. Exploitable via jqMix. Mitigation: upgrade to 1.16.2 or later.

Original description

The description as published by the source.

The Dojox jQuery wrapper jqMix mixin method is vulnerable to Prototype Pollution.

Affected Area:

//https://github.com/dojo/dojox/blob/master/jq.js#L442
		var tobj = {};
		for(var x in props){
			// the "tobj" condition avoid copying properties in "props"
			// inherited from Object.prototype.  For example, if obj has a custom
			// toString() method, don't overwrite it with the toString() method
			// that props inherited from Object.prototype
			if((tobj[x] === undefined || tobj[x] != props[x]) && props[x] !== undefined && obj != props[x]){
				if(dojo.isObject(obj[x]) && dojo.isObject(props[x])){
					if(dojo.isArray(props[x])){
						obj[x] = props[x];
					}else{
						obj[x] = jqMix(obj[x], props[x]);
					}
				}else{
					obj[x] = props[x];
				}

Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2020-5259 has been found in dojox.
Attackers can target a specific entry point like jqMix over the network to misuse the product.
Confidential information can be exposed externally.
What to do: upgrade dojox to 1.16.2 or later.
If unsure, ask your IT team or search "dojox CVE-2020-5259" on the vendor's site.

CVE-2020-5259 (dojox) — CWE-94
Attack vector: remote (network-reachable)
Attack surface: jqMix
Patched: 1.16.2 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

Arbitrary code execution (CWE-94) exists in dojox. Attackers reach the vulnerable code path via jqMix.

📍 Affected scope

Check the vendor advisory for the affected versions of dojox. Attack surface: jqMix.

🔥 Severity

Severity: ?. Confidential information can be exposed externally.

🔧 How to fix

Update to 1.16.2.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'dojox' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'dojox' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で dojox を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade dojox to 1.16.2

    ステージング環境で 1.16.2 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

npm dojox
[{"type":"SEMVER","events":[{"introduced":"1.16.0"},{"fixed":"1.16.2"}]}]

References

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