6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
9 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
0.974 High
EPSS
Percentile
99.9%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | apache2 | < 2.4.29-1ubuntu4.18 | UNKNOWN |
ubuntu | 20.04 | noarch | apache2 | < 2.4.41-4ubuntu3.6 | UNKNOWN |
ubuntu | 21.04 | noarch | apache2 | < 2.4.46-4ubuntu1.3 | UNKNOWN |
ubuntu | 21.10 | noarch | apache2 | < 2.4.48-3.1ubuntu2 | UNKNOWN |
ubuntu | 22.04 | noarch | apache2 | < 2.4.48-3.1ubuntu2 | UNKNOWN |
ubuntu | 16.04 | noarch | apache2 | < 2.4.18-2ubuntu3.17+esm3 | UNKNOWN |
httpd.apache.org/security/vulnerabilities_24.html
httpd.apache.org/security/vulnerabilities_24.html#CVE-2021-40438
launchpad.net/bugs/cve/CVE-2021-40438
nvd.nist.gov/vuln/detail/CVE-2021-40438
security-tracker.debian.org/tracker/CVE-2021-40438
ubuntu.com/security/notices/USN-5090-1
ubuntu.com/security/notices/USN-5090-2
ubuntu.com/security/notices/USN-5090-2 (regression update esm)
ubuntu.com/security/notices/USN-5090-3 (regression update)
www.cve.org/CVERecord?id=CVE-2021-40438
6.8 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
9 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
0.974 High
EPSS
Percentile
99.9%