Описание
Security update for python-tornado6
This update for python-tornado6 fixes the following issues:
- CVE-2025-67724: unescaped
reasonargument used in HTTP headers and in HTML default error pages can be used by attackers to launch header injection or XSS attacks (bsc#1254903). - CVE-2025-67725: quadratic complexity of string concatenation operations used by the
HTTPHeaders.addmethod can lead to DoS when processing a maliciously crafted HTTP request (bsc#1254905). - CVE-2025-67726: quadratic complexity algorithm used in the
_parseparamfunction ofhttputil.pycan lead to DoS when processing maliciously crafted parameters in aContent-Dispositionheader (bsc#1254904).
Список пакетов
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
SUSE Linux Enterprise Module for Python 3 15 SP7
SUSE Linux Enterprise Server 15 SP4-LTSS
SUSE Linux Enterprise Server 15 SP5-LTSS
SUSE Linux Enterprise Server 15 SP6-LTSS
SUSE Linux Enterprise Server for SAP Applications 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15 SP5
SUSE Linux Enterprise Server for SAP Applications 15 SP6
openSUSE Leap 15.6
Ссылки
- Link for SUSE-SU-2026:0010-1
- E-Mail link for SUSE-SU-2026:0010-1
- SUSE Security Ratings
- SUSE Bug 1254903
- SUSE Bug 1254904
- SUSE Bug 1254905
- SUSE CVE CVE-2025-67724 page
- SUSE CVE CVE-2025-67725 page
- SUSE CVE CVE-2025-67726 page
Описание
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, the supplied reason phrase is used unescaped in HTTP headers (where it could be used for header injection) or in HTML in the default error page (where it could be used for XSS) and can be exploited by passing untrusted or malicious data into the reason argument. Used by both RequestHandler.set_status and tornado.web.HTTPError, the argument is designed to allow applications to pass custom "reason" phrases (the "Not Found" in HTTP/1.1 404 Not Found) to the HTTP status line (mainly for non-standard status codes). This issue is fixed in version 6.5.3.
Затронутые продукты
Ссылки
- CVE-2025-67724
- SUSE Bug 1254903
Описание
Tornado is a Python web framework and asynchronous networking library. In versions 6.5.2 and below, a single maliciously crafted HTTP request can block the server's event loop for an extended period, caused by the HTTPHeaders.add method. The function accumulates values using string concatenation when the same header name is repeated, causing a Denial of Service (DoS). Due to Python string immutability, each concatenation copies the entire string, resulting in O(n^2) time complexity. The severity can vary from high if max_header_size has been increased from its default, to low if it has its default value of 64KB. This issue is fixed in version 6.5.3.
Затронутые продукты
Ссылки
- CVE-2025-67725
- SUSE Bug 1254905
Описание
Tornado is a Python web framework and asynchronous networking library. Versions 6.5.2 and below use an inefficient algorithm when parsing parameters for HTTP header values, potentially causing a DoS. The _parseparam function in httputil.py is used to parse specific HTTP header values, such as those in multipart/form-data and repeatedly calls string.count() within a nested loop while processing quoted semicolons. If an attacker sends a request with a large number of maliciously crafted parameters in a Content-Disposition header, the server's CPU usage increases quadratically (O(n^2)) during parsing. Due to Tornado's single event loop architecture, a single malicious request can cause the entire server to become unresponsive for an extended period. This issue is fixed in version 6.5.3.
Затронутые продукты
Ссылки
- CVE-2025-67726
- SUSE Bug 1254904