Vulnerability in django-basic-auth-ip-whitelist (CVE-2020-4071)

Summary

Vulnerability in django-basic-auth-ip-whitelist (CVE-2020-4071). Risk of unauthorized operations or information disclosure. Exploitable via BASIC_AUTH_LOGIN. Mitigation: upgrade to 0.3.4 or later.

Original description

The description as published by the source.

Impact

Potential timing attack exists on websites where the basic authentication is used or configured, i.e. BASIC_AUTH_LOGIN and BASIC_AUTH_PASSWORD is set. Currently the string comparison between configured credentials and the ones provided by users is performed through a character-by-character string comparison. This enables a possibility that attacker may time the time it takes the server to validate different usernames and password, and use this knowledge to work out the valid credentials. This attack is understood not to be realistic over the Internet. However, it may be achieved from within local networks where the website is hosted, e.g. from inside a data centre where a website's server is located.

Sites protected by IP address whitelisting only are unaffected by this vulnerability.

Patches

This vulnerability has been fixed on version 0.3.4 of django-basic-auth-ip-whitelist. Update to version 0.3.4 as soon as possible and change basic authentication username and password configured on a Django project using this package.

Workarounds

Stop using basic authentication and use the IP whitelisting component only. It can be achieved by not setting BASIC_AUTH_LOGIN and BASIC_AUTH_PASSWORD in Django project settings.

References

Django mailing list discussion

For more information

If you have any questions or comments about this advisory:

Open an issue at h…

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-2020-4071 has been found in django-basic-auth-ip-whitelist.
Attackers can target a specific entry point like BASIC_AUTH_LOGIN over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade django-basic-auth-ip-whitelist to 0.3.4 or later.
If unsure, ask your IT team or search "django-basic-auth-ip-whitelist CVE-2020-4071" on the vendor's site.

CVE-2020-4071 (django-basic-auth-ip-whitelist) — CWE-208
Attack vector: physical / unauthenticated / no user interaction
Attack surface: BASIC_AUTH_LOGIN / BASIC_AUTH_PASSWORD
Patched: 0.3.4 — apply immediately
Workaround: Stop using basic authentication and use the IP whitelisting component only.
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

A vulnerability (CWE-208) exists in django-basic-auth-ip-whitelist. Attackers reach the vulnerable code path via BASIC_AUTH_LOGIN without authentication.

📍 Affected scope

Check the vendor advisory for the affected versions of django-basic-auth-ip-whitelist. Attack surface: BASIC_AUTH_LOGIN / BASIC_AUTH_PASSWORD.

🔥 Severity

Severity: ?. Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to 0.3.4.

🛡️ Workaround

Workaround: Stop using basic authentication and use the IP whitelisting component only.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'django-basic-auth-ip-whitelist' . 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
Identify exposure identify
```
grep -r 'django-basic-auth-ip-whitelist' . | 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 django-basic-auth-ip-whitelist を grep し、稼働しているサービス・バージョンを把握する。
2
Apply temporary workaround mitigate
```
Stop using basic authentication and use the IP whitelisting component only.
```
パッチが適用されるまでの応急処置として、Stop using basic authentication and use the IP whitelisting component only. を実施。回避策の副作用 (機能低下) を確認した上で。
3
Apply patch patch
```
Upgrade django-basic-auth-ip-whitelist to 0.3.4
```
ステージング環境で 0.3.4 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。
4
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

PyPI django-basic-auth-ip-whitelist

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.3.4"}]}]