CVSS: 9.8EPSS: 13%CPEs: 35EXPL: 2CVE-2021-44790 – Possible buffer overflow when parsing multipart content in mod_lua of Apache HTTP Server 2.4.51 and earlier
https://notcve.org/view.php?id=CVE-2021-44790
A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and earlier. Un cuerpo de petición cuidadosamente diseñado puede causar un desbordamiento de búfer en el analizador multiparte mod_lua (r:parsebody() llamado desde scripts Lua). El equipo de Apache httpd no presenta constancia de que se presente una explotación para esta vulnerabilidad, aunque podría ser posible diseñar uno. • https://www.exploit-db.com/exploits/51193 https://github.com/nuPacaChi/-CVE-2021-44790 http://httpd.apache.org/security/vulnerabilities_24.html http://packetstormsecurity.com/files/171631/Apache-2.4.x-Buffer-Overflow.html http://seclists.org/fulldisclosure/2022/May/33 http://seclists.org/fulldisclosure/2022/May/35 http://seclists.org/fulldisclosure/2022/May/38 http://www.openwall.com/lists/oss-security/2021/12/20/4 https://lists.fedoraproject.org/archives/list/package-announce • CWE-787: Out-of-bounds Write •
CVSS: 8.8EPSS: 1%CPEs: 16EXPL: 0CVE-2021-43818 – HTML Cleaner allows crafted and SVG embedded scripts to pass through
https://notcve.org/view.php?id=CVE-2021-43818
lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available. lxml es una biblioteca para procesar XML y HTML en el lenguaje Python. En versiones anteriores a 4.6.5, el limpiador de HTML en lxml.html dejaba pasar determinado contenido de scripts manipulados, así como contenido de scripts en archivos SVG insertados usando URIs de datos. • https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776 https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0 https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8 https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7 https:/ • CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •
CVSS: 7.5EPSS: 0%CPEs: 10EXPL: 2CVE-2021-42717
https://notcve.org/view.php?id=CVE-2021-42717
ModSecurity 3.x through 3.0.5 mishandles excessively nested JSON objects. Crafted JSON objects with nesting tens-of-thousands deep could result in the web server being unable to service legitimate requests. Even a moderately large (e.g., 300KB) HTTP request can occupy one of the limited NGINX worker processes for minutes and consume almost all of the available CPU on the machine. Modsecurity 2 is similarly vulnerable: the affected versions include 2.8.0 through 2.9.4. ModSecurity versiones 3.x hasta 3.0.5, maneja inapropiadamente los objetos JSON excesivamente anidados. • https://github.com/EkamSinghWalia/Detection-and-Mitigation-script-for-CVE-2021-42717 https://lists.debian.org/debian-lts-announce/2022/05/msg00042.html https://www.debian.org/security/2021/dsa-5023 https://www.oracle.com/security-alerts/cpuapr2022.html https://www.trustwave.com/en-us/resources/blogs/spiderlabs-blog/modsecurity-dos-vulnerability-in-json-parsing-cve-2021-42717 • CWE-674: Uncontrolled Recursion •
CVSS: 5.3EPSS: 0%CPEs: 51EXPL: 0CVE-2021-25219 – Lame cache can be abused to severely degrade resolver performance
https://notcve.org/view.php?id=CVE-2021-25219
In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 -> 9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND 9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it possible for its internal data structures to grow almost infinitely, which may cause significant delays in client query processing. En BIND versiones 9.3.0 posteriores a 9.11.35, versiones 9.12.0 posteriores a 9.16.21, y en versiones 9.9.3-S1 posteriores a 9.11.35-S1 y versiones 9.16.8-S1 posteriores a 9.16.21-S1 de BIND Supported Preview Edition, así como en las versiones 9.17.0 -> 9.17.18 de la rama de desarrollo de BIND 9.17, una explotación de servidores autoritativos rotos usando un fallo en el procesamiento de respuestas puede causar una degradación en el rendimiento del resolver BIND. La forma en que está diseñada actualmente la caché de lame hace posible que sus estructuras de datos internas crezcan casi infinitamente, lo que puede causar retrasos significativos en el procesamiento de las consultas de los clientes A flaw was found in the way bind processes broken responses from authoritative servers. This caching mechanism could be abused by an attacker to significantly degrade resolver performance. • https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://kb.isc.org/v1/docs/cve-2021-25219 https://lists.debian.org/debian-lts-announce/2021/11/msg00001.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EF4NAVRV4H3W4GA3LGGZYUKD3HSJBAVW https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YGV7SA27CTYLGFJSPUM3V36ZWK7WWDI4 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YTKC4E3HUOLYN5 • CWE-20: Improper Input Validation •
CVSS: 7.1EPSS: 0%CPEs: 1EXPL: 0CVE-2021-35666
https://notcve.org/view.php?id=CVE-2021-35666
Vulnerability in the Oracle HTTP Server product of Oracle Fusion Middleware (component: OSSL Module). The supported version that is affected is 11.1.1.9.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Oracle HTTP Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle HTTP Server accessible data. CVSS 3.1 Base Score 5.9 (Confidentiality impacts). • https://www.oracle.com/security-alerts/cpuoct2021.html •