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CVE-2019-13032

Published: 28 June 2019

An issue was discovered in FlightCrew v0.9.2 and earlier. A NULL pointer dereference occurs in GetRelativePathToNcx() or GetRelativePathsToXhtmlDocuments() when a NULL pointer is passed to xc::XMLUri::isValidURI(). This affects third-party software (not Sigil) that uses FlightCrew as a library.

From the Ubuntu Security Team

Mike Salvatore discovered that FlightCrew improperly handled certain malformed EPUB files. An attacker could potentially use this vulnerability to cause a denial of service.

Priority

Low

Cvss 3 Severity Score

5.5

Score breakdown

Status

Package Release Status
flightcrew
Launchpad, Ubuntu, Debian
bionic
Released (0.7.2+dfsg-10ubuntu0.1)
cosmic
Released (0.7.2+dfsg-12ubuntu0.1)
disco
Released (0.7.2+dfsg-13ubuntu0.19.04.1)
trusty Does not exist

upstream Needed

xenial
Released (0.7.2+dfsg-6ubuntu0.1)

Severity score breakdown

Parameter Value
Base score 5.5
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H