CVE-2021-3537 – libxml2: NULL pointer dereference when post-validating mixed content parsed in recovery mode

https://notcve.org/view.php?id=CVE-2021-3537

14 May 2021 — A vulnerability found in libxml2 in versions before 2.9.11 shows that it did not propagate errors while parsing XML mixed content, causing a NULL dereference. If an untrusted XML document was parsed in recovery mode and post-validated, the flaw could be used to crash the application. The highest threat from this vulnerability is to system availability. Una vulnerabilidad encontrada en libxml2 en versiones anteriores a 2.9.11 muestra que no propagó errores al analizar el contenido mixto XML, causando una des... • https://bugzilla.redhat.com/show_bug.cgi?id=1956522 • CWE-476: NULL Pointer Dereference •

CVE-2021-3426 – python: Information disclosure via pydoc

https://notcve.org/view.php?id=CVE-2021-3426

03 May 2021 — There's a flaw in Python 3's pydoc. A local or adjacent attacker who discovers or is able to convince another local or adjacent user to start a pydoc server could access the server and use it to disclose sensitive information belonging to the other user that they would not normally be able to access. The highest risk of this flaw is to data confidentiality. This flaw affects Python versions before 3.8.9, Python versions before 3.9.3 and Python versions before 3.10.0a7. Se presenta un fallo en pydoc de Pytho... • https://bugzilla.redhat.com/show_bug.cgi?id=1935913 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-200: Exposure of Sensitive Information to an Unauthorized Actor •

CVE-2021-3448 – dnsmasq: fixed outgoing port used when --server is used with an interface name

https://notcve.org/view.php?id=CVE-2021-3448

08 Apr 2021 — A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface, dnsmasq uses a fixed port while forwarding queries. An attacker on the network, able to find the outgoing port used by dnsmasq, only needs to guess the random transmission ID to forge a reply and get it accepted by dnsmasq. This flaw makes a DNS Cache Poisoning attack much easier. The highest threat from this vulnerability is to data integrity. • https://bugzilla.redhat.com/show_bug.cgi?id=1939368 • CWE-358: Improperly Implemented Security Check for Standard •

CVE-2020-25710 – openldap: assertion failure in CSN normalization with invalid input

https://notcve.org/view.php?id=CVE-2020-25710

28 Nov 2020 — A flaw was found in OpenLDAP in versions before 2.4.56. This flaw allows an attacker who sends a malicious packet processed by OpenLDAP to force a failed assertion in csnNormalize23(). The highest threat from this vulnerability is to system availability. Se encontró un fallo en OpenLDAP en versiones anteriores a 2.4.56. Este fallo permite a un atacante que envía un paquete malicioso procesado por OpenLDAP forzar una afirmación fallida en la función csnNormalize23(). • https://bugzilla.redhat.com/show_bug.cgi?id=1899678 • CWE-617: Reachable Assertion •

CVE-2020-1045 – Microsoft ASP.NET Core Security Feature Bypass Vulnerability

https://notcve.org/view.php?id=CVE-2020-1045

08 Sep 2020 —

A security feature bypass vulnerability exists in the way Microsoft ASP.NET Core parses encoded cookie names.

The ASP.NET Core cookie parser decodes entire cookie strings which could allow a malicious attacker to set a second cookie with the name being percent encoded.

The security update addresses the vulnerability by fixing the way the ASP.NET Core cookie parser handles encoded names.

Se presenta una vulnerabilidad de omisión de la característica de seguridad en la manera en que Micro... • https://access.redhat.com/errata/RHSA-2020:3699 • CWE-807: Reliance on Untrusted Inputs in a Security Decision •

CVE-2019-16789 – HTTP Request Smuggling in Waitress: Invalid whitespace characters in headers

https://notcve.org/view.php?id=CVE-2019-16789

26 Dec 2019 — In Waitress through version 1.4.0, if a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Specially crafted requests containing special whitespace characters in the Transfer-Encoding header would get parsed by Waitress as being a chunked request, but a front-end server would use the Content-Length instead as the Transfer-Encoding header is considered inv... • https://access.redhat.com/errata/RHSA-2020:0720 • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') •

CVE-2019-16785 – HTTP Request Smuggling: LF vs CRLF handling in Waitress

https://notcve.org/view.php?id=CVE-2019-16785

20 Dec 2019 — Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end server does not parse header fields with an LF the same way as it does those with a CRLF it can lead to the front-end and the back-end server parsing the same HTTP message in two different ways. This can lead to a potent... • https://access.redhat.com/errata/RHSA-2020:0720 • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') •

CVE-2019-16786 – HTTP Request Smuggling: Invalid Transfer-Encoding in Waitress

https://notcve.org/view.php?id=CVE-2019-16786

20 Dec 2019 — Waitress through version 1.3.1 would parse the Transfer-Encoding header and only look for a single string value, if that value was not chunked it would fall through and use the Content-Length header instead. According to the HTTP standard Transfer-Encoding should be a comma separated list, with the inner-most encoding first, followed by any further transfer codings, ending with chunked. Requests sent with: "Transfer-Encoding: gzip, chunked" would incorrectly get ignored, and the request would use a Content-... • https://access.redhat.com/errata/RHSA-2020:0720 • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') •

CVE-2019-13734 – sqlite: fts3: improve shadow table corruption detection

https://notcve.org/view.php?id=CVE-2019-13734

10 Dec 2019 — Out of bounds write in SQLite in Google Chrome prior to 79.0.3945.79 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. Una escritura fuera de limites en SQLite en Google Chrome versiones anteriores a la versión 79.0.3945.79, permitió a un atacante remoto explotar potencialmente una corrupción de la pila por medio de una página HTML especialmente diseñada. It was discovered that SQLite incorrectly handled certain shadow tables. An attacker could use this issue to cause... • http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00032.html • CWE-787: Out-of-bounds Write •

CVE-2019-11135 – hw: TSX Transaction Asynchronous Abort (TAA)

https://notcve.org/view.php?id=CVE-2019-11135

12 Nov 2019 — TSX Asynchronous Abort condition on some CPUs utilizing speculative execution may allow an authenticated user to potentially enable information disclosure via a side channel with local access. Una condición de tipo TSX Asynchronous Abort en algunas CPU que utilizan ejecución especulativa puede habilitar a un usuario autenticado para permitir potencialmente una divulgación de información por medio de un canal lateral con acceso local. A flaw was found in the way Intel CPUs handle speculative execution of ins... • http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00045.html • CWE-203: Observable Discrepancy •