Vulnerability Analysis
Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49
CVE-2021-41773
A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. 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 "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions. The fix in Apache HTTP Server 2.4.50 was found to be incomplete, see CVE-2021-42013.
CISA KEV
Nuclei Template
CVSS Base Score
7.5
HIGH
Exploitability:3.9
Impact Score:3.6
Temporal Score:-
EPSS:99.99%
Threat Intelligence Signals
CISA KEV
YES
KEV Date Added
2021-11-03
Ransomware Use
Known
KEV Due Date
2021-11-17
VulnCheck In-the-Wild
No
Nuclei Template
YES
EPSS Score
99.992%
EPSS Percentile
100.0th pct
GHSA ID
GitHub Severity
HIGH
SSVC Exploitation
—
SSVC Automatable
—
Vulnerability Class
—
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
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