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CVE-2019-11481

Apport reads arbitrary files if ~/.config/apport/settings is a symlink

Public exploit available. Not confirmed exploited in the wild yet. Fixed versions are out.

CVSS 3.13.8LowEPSS percentile38th0.5% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
Public exploit: 1 sourceFix2 products4 fixed builds listed below

Published Updated Sources: CVE.org, NVD, BDU

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • Canonical apportAffected: ≥ 2.14.1, < 2.14.1-0ubuntu3.29+esm2Upgrade to: 2.14.1-0ubuntu3.29+esm2Affected: ≥ 2.20.1, < 2.20.1-0ubuntu2.20Upgrade to: 2.20.1-0ubuntu2.20Affected: ≥ 2.20.9, < 2.20.9-0ubuntu7.8Upgrade to: 2.20.9-0ubuntu7.8Affected: ≥ 2.20.11, < 2.20.11-0ubuntu8.1Upgrade to: 2.20.11-0ubuntu8.1Stated by: CVE record
  • Canonical Ltd. UbuntuAffected: 16.04 LTSUpgrade to: not statedStated by: BDU

Versions as the sources state them. Full version matrix after sign-in

Check it yourselfA free OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

Kevin Backhouse discovered that apport would read a user-supplied configuration file with elevated privileges. By replacing the file with a symbolic link, a user could get apport to read any file on the system as root, with unknown consequences.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS38th
Public exploit
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

1 source with a proof of concept or module.

Exploit links, PoCs and Metasploit modules after sign-in
EPSS

0.5% chance of exploitation activity in the next 30 days, which ranks it in the 38th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

The patch came 471 days before any public exploit.

  1. OpenVAS check added
  2. Public exploit / PoCsource: packetstorm
  3. Patch availablerecord updated
  4. Publishedweakness classified, att&ck mapped

Affected products

And 2 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Scored 3.8 by NVD.

How it is reached

  • Attack Vector LocalRequires local access to the vulnerable system (e.g. local login, malicious file)
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required LowRequires basic user-level privileges
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)

Impact if exploited

  • Confidentiality LowSome restricted information is disclosed, but limited in scope
  • Integrity NoneNo integrity impact
  • Availability NoneNo availability impact

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 2 more references. See all after sign-in

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