Medium severity · published Jun 10, 2021
CVE-2021-30641
Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF'
5.3
CVSS
52.6%
EPSS
No
On KEV
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)52.6% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HS
HTTP Server · Apache
2.4.39 through 2.4.46 · source: NVD
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
EM
Enterprise Manager Ops Center · Oracle
12.4.0.0 · source: NVD
FE
Fedora · Fedoraproject
34; 35 · source: NVD
IE
Instantis Enterprisetrack · Oracle
17.1; 17.2; 17.3 · source: NVD
ZS
Zfs Storage Appliance Kit · Oracle
8.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30641
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30641
Vendor Advisory
http://httpd.apache.org/security/vulnerabilities_24.html
Mailing List
http://www.openwall.com/lists/oss-security/2021/06/10/8
lists.apache.org
https://lists.apache.org/thread.html/r2b4773944d83d2799de9fbaeee7fe0f3fd72669467787e02f434cb10%40%3Cannounce.httpd.apache.org%3E
lists.apache.org
https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd%40%3Cdev.httpd.apache.org%3E
Mailing List
https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org%3E
Mailing List
https://lists.debian.org/debian-lts-announce/2021/07/msg00006.html
More from HTTP Server
9.8
CVE-2021-42013
Path Traversal and Remote Code Execution in Apache HTTP Server 2.4.49 and 2.4.50 (incomplete fix of CVE-2021-41773)
9.8
CVE-2021-41773
Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49
9.1
CVE-2024-38475
Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.
9.0
CVE-2021-40438
mod_proxy SSRF
7.8
CVE-2019-0211
Apache HTTP Server Privilege Escalation Vulnerability