UBUNTU-CVE-2017-18196

Leptonica 1.74.4 constructs unintended pathnames (containing duplicated path components) when operating on files in /tmp subdirectories, which might allow local users to bypass intended file restrictions by leveraging access to a directory located deeper within the /tmp directory tree, as demonstrated by /tmp/ANY/PATH/ANY/PATH/input.tif.

References

Affected packages

Ubuntu:Pro:16.04:LTS / leptonlib

Package

Name: leptonlib
Purl: pkg:deb/ubuntu/leptonlib@1.73-1ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.73-1ubuntu0.1~esm1

Affected versions

1.*

1.72-3

1.72-3build1

1.73-1

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "leptonica-progs",
            "binary_version": "1.73-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "liblept5",
            "binary_version": "1.73-1ubuntu0.1~esm1"
        },
        {
            "binary_name": "libleptonica-dev",
            "binary_version": "1.73-1ubuntu0.1~esm1"
        }
    ]
}