CVE-2021-42013
Description
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.
How to fix
Apply updates per vendor instructions.
CISA due date: Nov 17, 2021- oracle jd_edwards_enterpriseone_tools9.2.6.0 or later
- oracle secure_backup18.1.0.1.0 or later
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-apache-httpd-pathtrv-LAzg68cZ
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RMIIEFINL6FUIOPD2A3M5XC6DH45Y3CC/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WS5RVHOIIRECG65ZBTZY7IEJVWQSQPG3/
- security.gentoo.org/glsa/202208-20
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache http_server | 2.4.49, 2.4.50 | — |
| fedoraproject fedora | 34, 35 | — |
| oracle instantis_enterprisetrack | 17.1, 17.2, 17.3 | — |
| oracle jd_edwards_enterpriseone_tools | v < 9.2.6.0 | 9.2.6.0 |
| oracle secure_backup | v < 18.1.0.1.0 | 18.1.0.1.0 |
| netapp cloud_backup | No range specified | — |
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