CVE-2021-30641

Home/CVE/Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF'

CVE

Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF'

Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF'.

MEDIUM · CVSS 5.3 EPSS 0.36362

Schedule remediation

EPSS ≥ 0.10 - elevated exploitation probability
EPSS percentile: top 3% of all CVEs by exploitation likelihood

Sigma rules0 YARA rules0

▤

Affected Products & Versions

apache http server>= 2.4.39 and <= 2.4.46
debian linuxall versions
fedoraproject fedoraall versions
oracle enterprise manager ops centerall versions
oracle instantis enterprisetrackall versions
oracle zfs storage appliance kitall versions

▣

Scoring & Timeline

5.3

MEDIUM · CVSS v3.1 · security@apache.org

View on NVD

Attack Vector

Network Adjacent Local Physical

Attack Complexity

Low High

Privileges Required

None Low High

User Interaction

None Required

Scope

Unchanged Changed

Confidentiality

None Low High

Integrity

None Low High

Availability

None Low High

Published to NVD10 Jun 2021 · 07:15 AM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

⚑

Vendor Advisories

rhsaRHSA-2021:4614Moderate
rhsaRHSA-2021:4613Moderate
rhsaRHSA-2021:4257Moderate
suse-csafopenSUSE-SU-2021:2127-1
suse-csafopenSUSE-SU-2021:0908-1
Show all 13 vendor advisoriesmsrcCVE-2021-30641
suse-csafSUSE-SU-2021:2127-1
usnUSN-4994-2
usnUSN-4994-1
suse-csafSUSE-SU-2021:14749-1
suse-csafSUSE-SU-2021:2004-1
suse-csafSUSE-SU-2021:2006-1
oracle-cpuoracle-cpu-Enterprise-Manager-Ops-Center-9835--CVE-2021-30641

🔗

References & Sources

Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.

http://httpd.apache.org/security/vulnerabilities_24.htmlVendor Advisory

http://www.openwall.com/lists/oss-security/2021/06/10/8Mailing ListThird Party Advisory

https://lists.apache.org/thread.html/r2b4773944d83d2799de9fbaeee7fe0f3fd72669467787e02f434cb10%40%3Cannounce.httpd.apache.org%3E

https://lists.apache.org/thread.html/r7f2b70b621651548f4b6f027552f1dd91705d7111bb5d15cda0a68dd%40%3Cdev.httpd.apache.org%3E

https://lists.apache.org/thread.html/re026d3da9d7824bd93b9f871c0fdda978d960c7e62d8c43cba8d0bf3%40%3Ccvs.httpd.apache.org%3EMailing ListRelease NotesVendor Advisory

https://lists.debian.org/debian-lts-announce/2021/07/msg00006.htmlMailing ListThird Party Advisory

Show all 12 references

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SPBR6WUYBJNACHKE65SPL7TJOHX7RHWD/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNCYSR3BXT36FFF4XTCPL3HDQK4VP45R/

https://security.gentoo.org/glsa/202107-38Third Party Advisory

https://security.netapp.com/advisory/ntap-20210702-0001/Third Party Advisory

https://www.debian.org/security/2021/dsa-4937Third Party Advisory

https://www.oracle.com/security-alerts/cpuoct2021.htmlThird Party Advisory

Intelligence Graph · click any node to traverse

CVETechnique ActorTool Family

drag to reposition · click any node to traverse · button top-right enlarges

External lookups - second-class, for what we don’t hold ourselves

NVD CVE.org CISA Vulners Exploit-DB GitHub PoC VulnCheck KEV GreyNoise

Vulnerabilities
CISA KEV catalog
CWE weaknesses
CAPEC attack patterns
Package vulnerabilities

Threat intelligence
Threat actors
Tools & malware
ATT&CK techniques
IOCs

Detection & defense
Sigma rules
YARA rules
Atomic Red Team tests
D3FEND countermeasures

Compliance
NIST 800-53
ISO 27001:2022
SOC 2 TSC
PCI-DSS v4.0
CIS Controls v8.1

About
All capabilities
Live statistics
Data sources
Privacy policy
Terms of service

threatengine.sh · Open-source threat intelligence platform · 100+ authoritative sources · Every fact traces to its origin