Open Redirect in products-pluggableauthservice (CVE-2021-21337)
Summary
Vulnerability in products-pluggableauthservice (CVE-2021-21337). Confidential information can be exposed externally. Exploitable via pip. Mitigation: upgrade to 2.6.1 or later.
Original description
The description as published by the source.
Impact
What kind of vulnerability is it? Who is impacted?
Open redirect vulnerability - a maliciously crafted link to the login form and login functionality could redirect the browser to a different website.
Patches
Has the problem been patched? What versions should users upgrade to?
The problem has been fixed in version 2.6.1. Depending on how you have installed Products.PluggableAuthService, you should change the buildout version pin to 2.6.1 and re-run the buildout, or if you used pip simply do pip install "Products.PluggableAuthService>=2.6.1"
Workarounds
Is there a way for users to fix or remediate the vulnerability without upgrading?
There is no workaround. Users are encouraged to upgrade.
References
Are there any links users can visit to find out more?
For more information
If you have any questions or comments about this advisory:
- Open an issue in the Products.PluggableAuthService issue tracker
- Email us at security@plone.org
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-2021-21337 has been found in products-pluggableauthservice.
Attackers can target a specific entry point like pip over the network to misuse the product.
Confidential information can be exposed externally.
What to do: upgrade products-pluggableauthservice to 2.6.1 or later.
If unsure, ask your IT team or search "products-pluggableauthservice CVE-2021-21337" on the vendor's site.
CVE-2021-21337 (products-pluggableauthservice) — CWE-601
Attack vector: remote (network-reachable)
Attack surface: pip
Patched: 2.6.1 — 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.
A vulnerability (CWE-601) exists in products-pluggableauthservice. Attackers reach the vulnerable code path via pip.
Check the vendor advisory for the affected versions of products-pluggableauthservice. Attack surface: pip.
Severity: ?. Confidential information can be exposed externally.
Update to 2.6.1.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'products-pluggableauthservice' . 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
-
1Identify exposure identify
grep -r 'products-pluggableauthservice' . | 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
products-pluggableauthserviceを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade products-pluggableauthservice to 2.6.1ステージング環境で 2.6.1 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。
-
3Post-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
References
- advisory nvd.nist.gov
- package github.com
- web github.com
- web github.com
- web github.com
- web pypi.org
- web packetstormsecurity.com