{"document":{"aggregate_severity":{"namespace":"https://www.suse.com/support/security/rating/","text":"moderate"},"category":"csaf_vex","csaf_version":"2.0","distribution":{"text":"Copyright 2024 SUSE LLC. All rights reserved.","tlp":{"label":"WHITE","url":"https://www.first.org/tlp/"}},"lang":"en","notes":[{"category":"summary","text":"SUSE CVE-2023-30536","title":"Title"},{"category":"description","text":"slim/psr7 is a PSR-7 implementation for use with Slim 4. In versions prior to 1.6.1 an attacker could sneak in a newline (\\n) into both the header names and values. While the specification states that \\r\\n\\r\\n is used to terminate the header list, many servers in the wild will also accept \\n\\n. An attacker that is able to control the header names that are passed to Slilm-Psr7 would be able to intentionally craft invalid messages, possibly causing application errors or invalid HTTP requests being sent out with an PSR-18 HTTP client. The latter might present a denial of service vector if a remote service's web application firewall bans the application due to the receipt of malformed requests. The issue has been patched in version 1.6.1. There are no known workarounds to this issue. Users are advised to upgrade.","title":"Description of the CVE"},{"category":"legal_disclaimer","text":"CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).","title":"Terms of use"}],"publisher":{"category":"vendor","contact_details":"https://www.suse.com/support/security/contact/","name":"SUSE Product Security Team","namespace":"https://www.suse.com/"},"references":[{"category":"external","summary":"CVE-2023-30536","url":"https://www.suse.com/security/cve/CVE-2023-30536"},{"category":"external","summary":"SUSE Security Ratings","url":"https://www.suse.com/support/security/rating/"},{"category":"external","summary":"SUSE Bug 1238159 for CVE-2023-30536","url":"https://bugzilla.suse.com/1238159"},{"category":"external","summary":"Advisory link for openSUSE-SU-2025:0081-1","url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/472PX6IZ26ALBE66YKBJD3XTN7M34U4L/"}],"title":"SUSE CVE 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In versions prior to 1.6.1 an attacker could sneak in a newline (\\n) into both the header names and values. While the specification states that \\r\\n\\r\\n is used to terminate the header list, many servers in the wild will also accept \\n\\n. An attacker that is able to control the header names that are passed to Slilm-Psr7 would be able to intentionally craft invalid messages, possibly causing application errors or invalid HTTP requests being sent out with an PSR-18 HTTP client. The latter might present a denial of service vector if a remote service's web application firewall bans the application due to the receipt of malformed requests. The issue has been patched in version 1.6.1. There are no known workarounds to this issue. 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