Executive Summary

This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Title Sigil vulnerability
Name USN-4085-1 First vendor Publication 2019-08-01
Vendor Ubuntu Last vendor Modification 2019-08-01
Severity (Vendor) N/A Revision N/A

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:P/A:N)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.04 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS


Sigil could be made to overwrite files.

Software Description: - sigil: multi-platform ebook editor


Mike Salvatore discovered that Sigil mishandled certain malformed EPUB files. An attacker could use this vulnerability to write arbitrary files to the filesystem.

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.04:
sigil 0.9.13+dfsg-1ubuntu0.1
sigil-data 0.9.13+dfsg-1ubuntu0.1

Ubuntu 18.04 LTS:
sigil 0.9.9+dfsg-1ubuntu0.1~esm1
sigil-data 0.9.9+dfsg-1ubuntu0.1~esm1

Ubuntu 16.04 LTS:
sigil 0.9.5+dfsg-0ubuntu1+esm1
sigil-data 0.9.5+dfsg-0ubuntu1+esm1

In general, a standard system update will make all the necessary changes.


Package Information:

Original Source

Url : http://www.ubuntu.com/usn/USN-4085-1

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE/SANS Top 25)

CPE : Common Platform Enumeration

Application 1
Application 1
Os 3

Alert History

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Date Informations
2019-08-05 17:22:01
  • Multiple Updates
2019-08-01 17:18:59
  • First insertion