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CVE-2022-43551

Status Candidate

Overview

A vulnerability exists in curl <7.87.0 HSTS check that could be bypassed to trick it to keep using HTTP. Using its HSTS support, curl can be instructed to use HTTPS instead of using an insecure clear-text HTTP step even when HTTP is provided in the URL. However, the HSTS mechanism could be bypassed if the host name in the given URL first uses IDN characters that get replaced to ASCII counterparts as part of the IDN conversion. Like using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full stop (U+002E) `.`. Then in a subsequent request, it does not detect the HSTS state and makes a clear text transfer. Because it would store the info IDN encoded but look for it IDN decoded.

Related Files

Gentoo Linux Security Advisory 202310-12
Posted Oct 11, 2023
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202310-12 - Multiple vulnerabilities have been discovered in curl, the worst of which could result in arbitrary code execution. Versions greater than or equal to 8.3.0-r2 are affected.

tags | advisory, arbitrary, vulnerability, code execution
systems | linux, gentoo
advisories | CVE-2022-43551, CVE-2022-43552, CVE-2023-23914, CVE-2023-23915, CVE-2023-23916, CVE-2023-27533, CVE-2023-27534, CVE-2023-27535, CVE-2023-27536, CVE-2023-27537, CVE-2023-27538, CVE-2023-28319, CVE-2023-28320, CVE-2023-28321
SHA-256 | 3d74f33aacaddb6a8bc503eb43a420da64cb7375f9303e7a1b65cded7a8b82f6
Red Hat Security Advisory 2023-3354-01
Posted Jun 6, 2023
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2023-3354-01 - Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience. This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.51 Service Pack 2 serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.51 Service Pack 1, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include bypass, denial of service, double free, out of bounds read, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, web, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2006-20001, CVE-2022-25147, CVE-2022-4304, CVE-2022-43551, CVE-2022-43552, CVE-2022-4450, CVE-2023-0215, CVE-2023-0286, CVE-2023-23914, CVE-2023-23915, CVE-2023-23916, CVE-2023-25690
SHA-256 | 872079b042f0763e48a97309fcbc46a8880cc332bd629c972bb2a0f58175222a
Red Hat Security Advisory 2023-3355-01
Posted Jun 6, 2023
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2023-3355-01 - Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience. This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.51 Service Pack 2 serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.51 Service Pack 1, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include bypass, denial of service, double free, out of bounds read, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, web, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2006-20001, CVE-2022-25147, CVE-2022-4304, CVE-2022-43551, CVE-2022-43552, CVE-2022-43680, CVE-2022-4450, CVE-2023-0215, CVE-2023-0286, CVE-2023-23914, CVE-2023-23915, CVE-2023-23916, CVE-2023-25690
SHA-256 | cced047a9c8b64215ce3e215ff5c91c3249ad0174bafa7de957f9317816d705d
Apple Security Advisory 2023-03-27-3
Posted Mar 28, 2023
Authored by Apple | Site apple.com

Apple Security Advisory 2023-03-27-3 - macOS Ventura 13.3 addresses buffer overflow, bypass, code execution, integer overflow, out of bounds read, out of bounds write, and use-after-free vulnerabilities.

tags | advisory, overflow, vulnerability, code execution
systems | apple
advisories | CVE-2022-43551, CVE-2022-43552, CVE-2023-0049, CVE-2023-0051, CVE-2023-0054, CVE-2023-0288, CVE-2023-0433, CVE-2023-0512, CVE-2023-23514, CVE-2023-23523, CVE-2023-23525, CVE-2023-23526, CVE-2023-23527, CVE-2023-23532
SHA-256 | cb75f6c37534e8f4215e6f7a345a9fb3a56b1318a90f16c63dcb93ae4ed9d148
Ubuntu Security Notice USN-5788-1
Posted Jan 6, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5788-1 - Hiroki Kurosawa discovered that curl incorrectly handled HSTS support when certain hostnames included IDN characters. A remote attacker could possibly use this issue to cause curl to use unencrypted connections. This issue only affected Ubuntu 22.04 LTS, and Ubuntu 22.10. It was discovered that curl incorrectly handled denials when using HTTP proxies. A remote attacker could use this issue to cause curl to crash, resulting in a denial of service, or possibly execute arbitrary code.

tags | advisory, remote, web, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2022-43551, CVE-2022-43552
SHA-256 | 3ef92df63b6493af5d8bf8786dd0e272eec83c93043b706adf9ec6157dddd4d6
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