CVE-2020-15236 — HIGH (8.6)

Q: How severe is CVE-2020-15236?

CVE-2020-15236 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2020-15236?

Check the references section above for vendor advisories and patch information. Affected products include: Requarks Wiki.Js.

Vulnerability Description

In Wiki.js before version 2.5.151, directory traversal outside of Wiki.js context is possible when a storage module with local asset cache fetching is enabled. A malicious user can potentially read any file on the file system by crafting a special URL that allows for directory traversal. This is only possible when a storage module implementing local asset cache (e.g Local File System or Git) is enabled and that no web application firewall solution (e.g. cloudflare) strips potentially malicious URLs. Commit 084dcd69d1591586ee4752101e675d5f0ac6dcdc fixes this vulnerability by sanitizing the path before it is passed on to the storage module. The sanitization step removes any directory traversal (e.g. `..` and `.`) sequences as well as invalid filesystem characters from the path. As a workaround, disable any storage module with local asset caching capabilities such as Local File System and Git.

CVSS Score

8.6

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Requarks	Wiki.Js	>= 2.5.80, < 2.5.151

Related Weaknesses (CWE)

CWE-22

References

https://github.com/Requarks/wiki/commit/084dcd69d1591586ee4752101e675d5f0ac6dcdcPatchThird Party Advisory
https://github.com/Requarks/wiki/security/advisories/GHSA-whpv-5xg2-w527Third Party Advisory
https://github.com/Requarks/wiki/commit/084dcd69d1591586ee4752101e675d5f0ac6dcdcPatchThird Party Advisory
https://github.com/Requarks/wiki/security/advisories/GHSA-whpv-5xg2-w527Third Party Advisory

FAQ

What is CVE-2020-15236?

CVE-2020-15236 is a vulnerability with a CVSS score of 8.6 (HIGH). In Wiki.js before version 2.5.151, directory traversal outside of Wiki.js context is possible when a storage module with local asset cache fetching is enabled. A malicious user can potentially read an...

How severe is CVE-2020-15236?

CVE-2020-15236 has been rated HIGH with a CVSS base score of 8.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-15236?

Check the references section above for vendor advisories and patch information. Affected products include: Requarks Wiki.Js.