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CVE-2021-40438
Published: Sep 16, 2021
Modified: Oct 21, 2025
PUBLISHED
Description
A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.
| Vendor | Product | Versions |
|---|---|---|
Apache Software Foundation | Apache HTTP Server | affected Apache HTTP Server 2.4 - <= 2.4.48 |
Weaknesses (CWE)
References
https://httpd.apache.org/security/vulnerabilities_24.html
x_refsource_MISC
FEDORA-2021-dce7e7738e
vendor-advisory
x_refsource_FEDORA
[httpd-users] 20210923 [users@httpd] 2.4.49 security fixes: more info
mailing-list
x_refsource_MLIST
[httpd-users] 20210923 Re: [users@httpd] 2.4.49 security fixes: more info
mailing-list
x_refsource_MLIST
[httpd-users] 20210923 [users@httpd] Re: [External] : [users@httpd] 2.4.49 security fixes: more info
mailing-list
x_refsource_MLIST
[httpd-users] 20210923 Re: [users@httpd] Re: [External] : [users@httpd] 2.4.49 security fixes: more info
mailing-list
x_refsource_MLIST
FEDORA-2021-e3f6dd670d
vendor-advisory
x_refsource_FEDORA
[debian-lts-announce] 20211002 [SECURITY] [DLA 2776-1] apache2 security update
mailing-list
x_refsource_MLIST
[httpd-bugs] 20211008 [Bug 65616] CVE-2021-36160 regression
mailing-list
x_refsource_MLIST
DSA-4982
vendor-advisory
x_refsource_DEBIAN
[httpd-users] 20211019 [users@httpd] Regarding CVE-2021-40438
mailing-list
x_refsource_MLIST
[httpd-users] 20211019 Re: [users@httpd] Regarding CVE-2021-40438
mailing-list
x_refsource_MLIST
20211124 Multiple Vulnerabilities in Apache HTTP Server Affecting Cisco Products: November 2021
vendor-advisory
x_refsource_CISCO
https://www.oracle.com/security-alerts/cpujan2022.html
x_refsource_MISC
https://www.tenable.com/security/tns-2021-17
x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-20211008-0004/
x_refsource_CONFIRM
https://www.oracle.com/security-alerts/cpuapr2022.html
x_refsource_MISC
https://cert-portal.siemens.com/productcert/pdf/ssa-685781.pdf
x_refsource_CONFIRM
GLSA-202208-20
vendor-advisory
x_refsource_GENTOO
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