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Ubuntu.comUB:CVE-2021-42013HistoryOct 07, 2021 - 12:00 a.m.
CVE-2021-42013
2021-10-0700:00:00
ubuntu.com
ubuntu.com
47
0.974 High
EPSS
Percentile
99.9%
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 βrequire all deniedβ, 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.
Notes
| Author | Note |
|---|---|
| seth-arnold | Ubuntu wasnβt vulnerable to CVE-2021-41773 so we did not deploy the insufficient fix. |
References
www.openwall.com/lists/oss-security/2021/10/07/6
httpd.apache.org/security/vulnerabilities_24.html
httpd.apache.org/security/vulnerabilities_24.html#CVE-2021-42013
launchpad.net/bugs/cve/CVE-2021-42013
lists.apache.org/thread.html/r7c795cd45a3384d4d27e57618a215b0ed19cb6ca8eb070061ad5d837@%3Cannounce.apache.org%3E
lists.apache.org/thread.html/rb5b0e46f179f60b0c70204656bc52fcb558e961cb4d06a971e9e3efb@%3Cusers.httpd.apache.org%3E
nvd.nist.gov/vuln/detail/CVE-2021-42013
security-tracker.debian.org/tracker/CVE-2021-42013
www.cve.org/CVERecord?id=CVE-2021-42013
www.openwall.com/lists/oss-security/2021/10/07/6
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