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CVE-2023-45803

Status Candidate

Overview

urllib3 is a user-friendly HTTP client library for Python. urllib3 previously wouldn't remove the HTTP request body when an HTTP redirect response using status 301, 302, or 303 after the request had its method changed from one that could accept a request body (like `POST`) to `GET` as is required by HTTP RFCs. Although this behavior is not specified in the section for redirects, it can be inferred by piecing together information from different sections and we have observed the behavior in other major HTTP client implementations like curl and web browsers. Because the vulnerability requires a previously trusted service to become compromised in order to have an impact on confidentiality we believe the exploitability of this vulnerability is low. Additionally, many users aren't putting sensitive data in HTTP request bodies, if this is the case then this vulnerability isn't exploitable. Both of the following conditions must be true to be affected by this vulnerability: 1. Using urllib3 and submitting sensitive information in the HTTP request body (such as form data or JSON) and 2. The origin service is compromised and starts redirecting using 301, 302, or 303 to a malicious peer or the redirected-to service becomes compromised. This issue has been addressed in versions 1.26.18 and 2.0.7 and users are advised to update to resolve this issue. Users unable to update should disable redirects for services that aren't expecting to respond with redirects with `redirects=False` and disable automatic redirects with `redirects=False` and handle 301, 302, and 303 redirects manually by stripping the HTTP request body.

Related Files

Red Hat Security Advisory 2024-2968-03: Posted May 23, 2024; Authored by Red Hat | Site access.redhat.com; Red Hat Security Advisory 2024-2968-03 - An update for fence-agents is now available for Red Hat Enterprise Linux 8.; tags | advisory; systems | linux, redhat; advisories | CVE-2023-45803; SHA-256 | 15609d1ae6b4a8869f634c8206f49875ed94120bc059579d399af9e4086d3c05; Download | Favorite | View

Red Hat Security Advisory 2024-2952-03: Posted May 23, 2024; Authored by Red Hat | Site access.redhat.com; Red Hat Security Advisory 2024-2952-03 - An update for resource-agents is now available for Red Hat Enterprise Linux 8.; tags | advisory; systems | linux, redhat; advisories | CVE-2023-45803; SHA-256 | 67a48700c9405d9b48707cd8e9567092c5428be3ede1125a99027de46b2b86f4; Download | Favorite | View

Red Hat Security Advisory 2024-2734-03: Posted May 23, 2024; Authored by Red Hat | Site access.redhat.com; Red Hat Security Advisory 2024-2734-03 - An update for python-urllib3 is now available for Red Hat OpenStack Platform 17.1.; tags | advisory, python; systems | linux, redhat; advisories | CVE-2023-45803; SHA-256 | d15862742a4bce50c6cbd9b6587009dc6f89618a29c038d331e3ee8cb6d22b0f; Download | Favorite | View

Red Hat Security Advisory 2024-2132-03: Posted Apr 30, 2024; Authored by Red Hat | Site access.redhat.com; Red Hat Security Advisory 2024-2132-03 - An update for fence-agents is now available for Red Hat Enterprise Linux 9.; tags | advisory; systems | linux, redhat; advisories | CVE-2023-45803; SHA-256 | 904a1dc62c1d80d5eb2b85addce55a8019584d5c1ccd198f3836a45c99be970b; Download | Favorite | View

Red Hat Security Advisory 2024-1155-03: Posted Mar 6, 2024; Authored by Red Hat | Site access.redhat.com; Red Hat Security Advisory 2024-1155-03 - An update for fence-agents is now available for Red Hat Enterprise Linux 9.0 Extended Update Support.; tags | advisory; systems | linux, redhat; advisories | CVE-2023-45803; SHA-256 | 23d1bea8da267bfe3bc89ca123382f1c39ae2bd0ea7f14b35386ce99ff37e47b; Download | Favorite | View

Ubuntu Security Notice USN-6473-2: Posted Nov 15, 2023; Authored by Ubuntu | Site security.ubuntu.com; Ubuntu Security Notice 6473-2 - USN-6473-1 fixed vulnerabilities in urllib3. This update provides the corresponding updates for the urllib3 module bundled into pip. It was discovered that urllib3 didn't strip HTTP Authorization header on cross-origin redirects. A remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.; tags | advisory, remote, web, vulnerability; systems | linux, ubuntu; advisories | CVE-2018-25091, CVE-2023-43804, CVE-2023-45803; SHA-256 | 31f113322b019e54154cd30f2be05b8d4ca103f178cbdd5efa89e9a2ef3e0838; Download | Favorite | View

Ubuntu Security Notice USN-6473-1: Posted Nov 13, 2023; Authored by Ubuntu | Site security.ubuntu.com; Ubuntu Security Notice 6473-1 - It was discovered that urllib3 didn't strip HTTP Authorization header on cross-origin redirects. A remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. It was discovered that urllib3 didn't strip HTTP Cookie header on cross-origin redirects. A remote attacker could possibly use this issue to obtain sensitive information.; tags | advisory, remote, web; systems | linux, ubuntu; advisories | CVE-2018-25091, CVE-2023-43804, CVE-2023-45803; SHA-256 | 01c8788f56d352f691cc6e76bb162b2e9e247c8c99c3c08204defa5099ea0fa8; Download | Favorite | View

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CVE-2023-45803

Overview

Related Files

File Archive:

August 2024

Top Authors In Last 30 Days

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