CVE-2021-41773
CVSS V2 Medium 4.3
CVSS V3 High 7.5
Description
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.
Overview
- CVE ID
- CVE-2021-41773
- Assigner
- security@apache.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-10-05T09:15:07
- Last Modified Date
- 2022-10-28T16:16:21
Weakness Enumerations
CPE Configuration (Product)
CPE | Vulnerable | Operator | Version Start | Version End |
---|---|---|---|---|
cpe:2.3:a:apache:http_server:2.4.49:*:*:*:*:*:*:* | 1 | OR | ||
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | 1 | OR | ||
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* | 1 | OR | ||
cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:* | 1 | OR | ||
cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:* | 1 | OR | ||
cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:* | 1 | OR | ||
cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:N/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 7.5
- Base Severity
- HIGH
- Exploitability Score
- 3.9
- Impact Score
- 3.6
References
Sources
Source Name | Source URL |
---|---|
NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-41773 |
MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41773 |
History
Created | Old Value | New Value | Data Type | Notes |
---|---|---|---|---|
2022-04-04 00:42:02 | Added to TrackCVE | |||
2022-12-05 11:47:40 | 2021-10-05T09:15Z | 2021-10-05T09:15:07 | CVE Published Date | updated |
2022-12-05 11:47:40 | 2022-10-28T16:16:21 | CVE Modified Date | updated | |
2022-12-05 11:47:40 | Analyzed | Vulnerability Status | updated | |
2022-12-05 11:47:46 | References | updated |