Published:2022/11/21  Last Updated:2022/11/21

JVN#26044739
Typora fails to properly neutralize JavaScript code

Overview

Typora fails to properly neutralize JavaScript code.

Products Affected

  • Typora versions prior to 1.4.4

Description

Typora fails to properly neutralize JavaScript code (CWE-116).

Impact

Opening a file with the affected product may lead to execute the JavaScript code inside the file.

Solution

Update the Software
Update the software to the latest version according to the information provided by the developer.

The developer confirms the vulnerability is fixed in Typora versions 1.4.x.
The reporter confirms that Typora version 1.4.4 is not affected.

Vendor Status

Vendor Link
Typora History Releases

References

JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

CVSS v3 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Base Score: 4.4
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:N/C:N/I:P/A:N
Base Score: 4.3
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)

Comment

This analysis assumes that a target user downloads a crafted file and opens it with the affected product.

Credit

Eiji Mori of Flatt Security Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

Other Information

JPCERT Alert
JPCERT Reports
CERT Advisory
CPNI Advisory
TRnotes
CVE CVE-2022-43668
JVN iPedia JVNDB-2022-000092