BIT-apache-2021-42013

    Dashboard / Vulnerabilities / BIT-apache-2021-42013

    BIT-apache-2021-42013

    Published: 6 Mar 2024Last Modified: 8 Sept 2026

    Summary: Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)

    Details: 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.

    References: http://jvn.jp/en/jp/JVN51106450/index.html, http://packetstormsecurity.com/files/164501/Apache-HTTP-Server-2.4.50-Path-Traversal-Code-Execution.html, http://packetstormsecurity.com/files/164609/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html, http://packetstormsecurity.com/files/164629/Apache-2.4.49-2.4.50-Traversal-Remote-Code-Execution.html, http://packetstormsecurity.com/files/164941/Apache-HTTP-Server-2.4.50-Remote-Code-Execution.html, http://packetstormsecurity.com/files/165089/Apache-HTTP-Server-2.4.50-CVE-2021-42013-Exploitation.html, http://packetstormsecurity.com/files/167397/Apache-2.4.50-Remote-Code-Execution.html, http://www.openwall.com/lists/oss-security/2021/10/07/6, http://www.openwall.com/lists/oss-security/2021/10/08/1, http://www.openwall.com/lists/oss-security/2021/10/08/2, http://www.openwall.com/lists/oss-security/2021/10/08/3, http://www.openwall.com/lists/oss-security/2021/10/08/4, http://www.openwall.com/lists/oss-security/2021/10/08/5, http://www.openwall.com/lists/oss-security/2021/10/08/6, http://www.openwall.com/lists/oss-security/2021/10/09/1, http://www.openwall.com/lists/oss-security/2021/10/11/4, http://www.openwall.com/lists/oss-security/2021/10/15/3, http://www.openwall.com/lists/oss-security/2021/10/16/1, https://httpd.apache.org/security/vulnerabilities_24.html, https://lists.apache.org/thread.html/r17a4c6ce9aff662efd9459e9d1850ab4a611cb23392fc68264c72cb3%40%3Ccvs.httpd.apache.org%3E, https://lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837%40%3Cannounce.apache.org%3E, https://lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb%40%3Cusers.httpd.apache.org%3E, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/, https://security.gentoo.org/glsa/202208-20, https://security.netapp.com/advisory/ntap-20211029-0009/, https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ, https://www.oracle.com/security-alerts/cpuapr2022.html, https://www.oracle.com/security-alerts/cpujan2022.html, https://www.povilaika.com/apache-2-4-50-exploit/, https://nvd.nist.gov/vuln/detail/CVE-2021-42013, https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-42013

    Affected packages

    Package

    Name: apache

    Purl: pkg:bitnami/apache

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 2.4.49
    Fixed -2.4.50

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    BIT-apache-2021-42013 | CVE-DB