`Cookie` HTTP header isn't stripped on cross-origin redirects
CVE-2023-43804

5.9MEDIUM

Key Information:

Vendor

Urllib3

Status
Urllib3
Vendor
CVE Published:
4 October 2023

Badges

👾 Exploit Exists

What is CVE-2023-43804?

The urllib3 library, a widely used HTTP client for Python, exposes a security risk when users inadvertently include a Cookie header during HTTP requests. This oversight can lead to unintentional information leakage through HTTP redirects, especially when redirect behavior is not explicitly managed. Users must ensure they disable automatic redirects to mitigate this risk. The issue has been addressed in versions 1.26.17 and 2.0.5, emphasizing the importance of keeping library dependencies updated.

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Deploy the Patch

Affected Version(s)

urllib3 >= 2.0.0, < 2.0.6 < 2.0.0, 2.0.6

urllib3 < 1.26.17 < 1.26.17

References

https://github.com/urllib3/urllib3/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/urllib3/urllib3/commit/01220354d389cd0...
x_refsource_MISC
https://github.com/urllib3/urllib3/commit/644124ecd0b6e41...
x_refsource_MISC

CVSS V3.1

Score:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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