Published:2020/05/13 Last Updated:2020/05/13
JVN#41035278
BookStack vulnerable to cross-site scripting
Overview
BookStack contains a cross-site scripting vulnerability.
Products Affected
- BookStack versions prior to v0.29.2
Description
BookStack contains a cross-site scripting vulnerability (CWE-79).
Impact
An arbitrary script may be executed on the user's web browser.
Solution
Update the Software
Update the software to the latest version according to the information provided by the developer.
The developer states as follows;
After upgrading, The command php artisan bookstack:regenerate-comment-content should be ran to remove any pre-existing dangerous content.
Vendor Status
| Vendor | Link |
| BookStackApp / BookStack | Cross-Site Scripting Through Comment Creation |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
CVSS v3
CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Base Score:
5.4
| 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) |
CVSS v2
AV:N/AC:M/Au:S/C:N/I:P/A:N
Base Score:
3.5
| 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
Kenichi Okuno of Mitsui Bussan Secure Directions, Inc reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
Other Information
| JPCERT Alert |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2020-11055 |
| JVN iPedia |
JVNDB-2020-000031 |