CVE-2019-13013: Little Snitch versions 4.3.0 to 4.3.2 have a local privilege escalation vulnerability in their privileged help

Routine

MEDIUM 5.5UPGRADE

CVE-2019-13013 is a medium-severity flaw (CVSS 5.5) affecting little snitch. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Little Snitch versions 4.3.0 to 4.3.2 have a local privilege escalation vulnerability in their privileged helper tool. The privileged helper tool implements an XPC interface which is available to any process and allows directory listings and copying files as root.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	5.5 (Medium)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-264, CWE-862
Published	2019-08-23
Last modified	2026-06-17

Publisher (CNA): Objective Development Software GmbH · Vendor: obdev

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2019-08-23 17:15 UTCPublished CVE record published
2026-06-17 02:15 UTCUpdated Record last modified

obdev little snitch UPGRADE

Affected: >= 4.3.0 and <= 4.3.2

Fixed in: newer than 4.3.2

Safe to downgrade to: a release before 4.3.0

1. Check installed version

apt-cache policy little-snitch || rpm -q little-snitch || little-snitch --version

2. UPGRADE to newer than 4.3.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade little-snitch

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade little-snitch

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 4.3.0 (Debian / Ubuntu)

apt-cache madison little-snitch sudo apt install little-snitch=<VERSION_BEFORE_4.3.0> sudo apt-mark hold little-snitch

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list little-snitch sudo dnf downgrade little-snitch-<VERSION_BEFORE_4.3.0> sudo dnf versionlock add little-snitch

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2019-13013?

little snitch: upgrade to newer than 4.3.2. Exact commands for each OS are on this page.

Is CVE-2019-13013 being exploited?

CVE-2019-13013 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2019-13013 affect?

CVE-2019-13013 affects little snitch. Severity is medium (CVSS 5.5). Little Snitch versions 4.3.0 to 4.3.2 have a local privilege escalation vulnerability in their privileged helper tool. The privileged helper tool implements an XPC interface which is available to any process and allows directory listings an

How urgent is CVE-2019-13013?

Priority 25/100. No elevated risk signals yet.

Related CVEs

CVE-2020-13095 HIGH 8.8 UPGRADE Little Snitch version 4.5.1 and older changed ownership of a directory path controlled by the user
CVE-2019-13014 MEDIUM 5.5 DOWNGRADE Little Snitch versions 4.4.0 fixes a vulnerability in a privileged helper tool
CVE-2018-10470 MEDIUM 5.3 UPGRADE Little Snitch versions 4.0 to 4.0.6 use the SecStaticCodeCheckValidityWithErrors() function without the kSecCS
CVE-2017-2675 HIGH 7.8 DOWNGRADE DOWNGRADE Little Snitch version 3.0 through 3.7.3 suffer from a local privilege escalation vulnerability in the installe

References

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