CVSS: 8.2EPSS: 20%CPEs: 37EXPL: 0CVE-2021-44224 – Possible NULL dereference or SSRF in forward proxy configurations in Apache HTTP Server 2.4.51 and earlier
https://notcve.org/view.php?id=CVE-2021-44224
A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). This issue affects Apache HTTP Server 2.4.7 up to 2.4.51 (included). Un URI diseñado que es enviado a httpd configurado como proxy directo (ProxyRequests on) puede causar un fallo (desreferencia de puntero NULL) o, en el caso de configuraciones que mezclan declaraciones de proxy directo e inverso, puede permitir que las peticiones se dirijan a un endpoint de socket de dominio Unix declarado (Server Side Request Forgery). Este problema afecta a Apache HTTP Server versiones 2.4.7 hasta 2.4.51 (incluyéndola) There's a null pointer dereference and server-side request forgery flaw in httpd's mod_proxy module, when it is configured to be used as a forward proxy. A crafted packet could be sent on the adjacent network to the forward proxy that could cause a crash, or potentially SSRF via misdirected Unix Domain Socket requests. • http://httpd.apache.org/security/vulnerabilities_24.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/2021/12/20/3 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BFSWOH4X77CV7AH7C4RMHUBDWKQDL4YH https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RGWILBORT67SHMSLYSQZG2NMXGCMPUZO https:// • CWE-476: NULL Pointer Dereference CWE-918: Server-Side Request Forgery (SSRF) •
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: 5.9EPSS: 96%CPEs: 213EXPL: 7CVE-2021-45105 – Apache Log4j2 does not always protect from infinite recursion in lookup evaluation
https://notcve.org/view.php?id=CVE-2021-45105
Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1. Apache Log4j2 versiones 2.0-alpha1 hasta 2.16.0 (excluyendo las versiones 2.12.3 y 2.3.1) no protegían de la recursión no controlada de las búsquedas autorreferenciales. Esto permite a un atacante con control sobre los datos de Thread Context Map causar una denegación de servicio cuando es interpretada una cadena diseñada. • https://github.com/thedevappsecguy/Log4J-Mitigation-CVE-2021-44228--CVE-2021-45046--CVE-2021-45105--CVE-2021-44832 https://github.com/tejas-nagchandi/CVE-2021-45105 https://github.com/pravin-pp/log4j2-CVE-2021-45105 https://github.com/dileepdkumar/https-github.com-pravin-pp-log4j2-CVE-2021-45105-1 https://github.com/dileepdkumar/https-github.com-pravin-pp-log4j2-CVE-2021-45105 https://github.com/dileepdkumar/https-github.com-dileepdkumar-https-github.com-pravin-pp-log4j2-CVE-2021-45105-v htt • CWE-20: Improper Input Validation CWE-674: Uncontrolled Recursion •
CVSS: 9.8EPSS: 97%CPEs: 10EXPL: 28CVE-2021-42013 – Apache HTTP Server Path Traversal Vulnerability
https://notcve.org/view.php?id=CVE-2021-42013
It was found that the fix for CVE-2021-41773 in Apache HTTP Server 2.4.50 was insufficient. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue only affects Apache 2.4.49 and Apache 2.4.50 and not earlier versions. • https://www.exploit-db.com/exploits/50406 https://www.exploit-db.com/exploits/50446 https://www.exploit-db.com/exploits/50512 https://github.com/andrea-mattioli/apache-exploit-CVE-2021-42013 https://github.com/asaotomo/CVE-2021-42013-Apache-RCE-Poc-Exp https://github.com/BassoNicolas/CVE-2021-42013 https://github.com/TheLastVvV/CVE-2021-42013 https://github.com/rafifdna/CVE-2021-42013 https://github.com/rnsss/CVE-2021-42013 https://github.com/LayarKacaSiber/CVE-2021-42013 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 7.5EPSS: 97%CPEs: 7EXPL: 40CVE-2021-41773 – Apache HTTP Server Path Traversal Vulnerability
https://notcve.org/view.php?id=CVE-2021-41773
A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue is known to be exploited in the wild. • https://www.exploit-db.com/exploits/50512 https://www.exploit-db.com/exploits/50383 https://github.com/blasty/CVE-2021-41773 https://github.com/thehackersbrain/CVE-2021-41773 https://github.com/iilegacyyii/PoC-CVE-2021-41773 https://github.com/lorddemon/CVE-2021-41773-PoC https://github.com/0xRar/CVE-2021-41773 https://github.com/ZephrFish/CVE-2021-41773-PoC https://github.com/itsecurityco/CVE-2021-41773 https://github.com/BlueTeamSteve/CVE-2021-41773 https://github. • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •