JVN#51106450
Apache HTTP Server vulnerable to directory traversal
Overview
Apache HTTP Server contains a directory traversal vulnerability.
Products Affected
- Apache HTTP Server 2.4.49 and 2.4.50
Description
Apache HTTP Server provided by The Apache Software Foundation contains a directory traversal vulnerability (CWE-22).
Impact
A remote attacker may access the unprotected files in "require all denied" placed outside of the document root.
Moreover, if CGI scripts are enabled, arbitrary code may be executed.
Solution
Update the Software
Update to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Link |
| The Apache Software Foundation | Fixed in Apache HTTP Server 2.4.51 |
| Changes with Apache 2.4.51 |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
| Attack Vector(AV) | Physical (P) | Local (L) | Adjacent (A) | Network (N) |
|---|---|---|---|---|
| Attack Complexity(AC) | High (H) | Low (L) | ||
| Privileges Required(PR) | High (H) | Low (L) | None (N) | |
| User Interaction(UI) | Required (R) | None (N) | ||
| Scope(S) | Unchanged (U) | Changed (C) | ||
| Confidentiality Impact(C) | None (N) | Low (L) | High (H) | |
| Integrity Impact(I) | None (N) | Low (L) | High (H) | |
| Availability Impact(A) | None (N) | Low (L) | High (H) |
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) |
|---|---|---|---|
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) |
Credit
Shungo Kumasaka of Internet Initiative Japan Inc. reported this vulnerability to the developer, and also to IPA in order to notify users of its solution through JVN.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
Other Information
| JPCERT Alert |
|
| JPCERT Reports |
|
| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2021-42013 |
| JVN iPedia |
JVNDB-2021-000090 |
Update History
- 2021/10/08
- Added information under [Other Information] section.