Vulnerability Database

383,304

Total vulnerabilities in the database

CVE-2021-3710 — canonical / apport

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

An information disclosure via path traversal was discovered in apport/hookutils.py function read_file(). This issue affects: apport 2.14.1 versions prior to 2.14.1-0ubuntu3.29+esm8; 2.20.1 versions prior to 2.20.1-0ubuntu2.30+esm2; 2.20.9 versions prior to 2.20.9-0ubuntu7.26; 2.20.11 versions prior to 2.20.11-0ubuntu27.20; 2.20.11 versions prior to 2.20.11-0ubuntu65.3;

  • Published: Oct 1, 2021
  • Updated: Sep 13, 2026
  • CVE: CVE-2021-3710
  • Severity: Medium
  • Exploit:
  • CISA KEV:

CVSS v3:

  • Severity: Medium
  • Score: 6.5
  • AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CVSS v2:

  • Severity: Medium
  • Score: 4.7
  • AV:L/AC:M/Au:N/C:C/I:N/A:N
Software Affected versions
canonical / apport = 2.14.1-0ubuntu1
canonical / apport = 2.14.1-0ubuntu2
canonical / apport = 2.14.1-0ubuntu3
canonical / apport = 2.14.1-0ubuntu3.1
canonical / apport = 2.14.1-0ubuntu3.2
canonical / apport = 2.14.1-0ubuntu3.3
canonical / apport = 2.14.1-0ubuntu3.4
canonical / apport = 2.14.1-0ubuntu3.5
canonical / apport = 2.14.1-0ubuntu3.6
canonical / apport = 2.14.1-0ubuntu3.7
canonical / apport = 2.14.1-0ubuntu3.8
canonical / apport = 2.14.1-0ubuntu3.9
canonical / apport = 2.14.1-0ubuntu3.10
canonical / apport = 2.14.1-0ubuntu3.11
canonical / apport = 2.14.1-0ubuntu3.12
canonical / apport = 2.14.1-0ubuntu3.13
canonical / apport = 2.14.1-0ubuntu3.14
canonical / apport = 2.14.1-0ubuntu3.15
canonical / apport = 2.14.1-0ubuntu3.16
canonical / apport = 2.14.1-0ubuntu3.17
canonical / apport = 2.14.1-0ubuntu3.18
canonical / apport = 2.14.1-0ubuntu3.19
canonical / apport = 2.14.1-0ubuntu3.20
canonical / apport = 2.14.1-0ubuntu3.21
canonical / apport = 2.14.1-0ubuntu3.23
canonical / apport = 2.14.1-0ubuntu3.24
canonical / apport = 2.14.1-0ubuntu3.25
canonical / apport = 2.14.1-0ubuntu3.27
canonical / apport = 2.14.1-0ubuntu3.28
canonical / apport = 2.14.1-0ubuntu3.29
canonical / apport = 2.14.1-0ubuntu3.29+esm7
canonical / apport = 2.20.1-0ubuntu1
canonical / apport = 2.20.1-0ubuntu2
canonical / apport = 2.20.1-0ubuntu2.1
canonical / apport = 2.20.1-0ubuntu2.2
canonical / apport = 2.20.1-0ubuntu2.4
canonical / apport = 2.20.1-0ubuntu2.5
canonical / apport = 2.20.1-0ubuntu2.6
canonical / apport = 2.20.1-0ubuntu2.7
canonical / apport = 2.20.1-0ubuntu2.8
canonical / apport = 2.20.1-0ubuntu2.9
canonical / apport = 2.20.1-0ubuntu2.10
canonical / apport = 2.20.1-0ubuntu2.12
canonical / apport = 2.20.1-0ubuntu2.13
canonical / apport = 2.20.1-0ubuntu2.14
canonical / apport = 2.20.1-0ubuntu2.15
canonical / apport = 2.20.1-0ubuntu2.16
canonical / apport = 2.20.1-0ubuntu2.17
canonical / apport = 2.20.1-0ubuntu2.18
canonical / apport = 2.20.1-0ubuntu2.19
canonical / apport = 2.20.1-0ubuntu2.20
canonical / apport = 2.20.1-0ubuntu2.21
canonical / apport = 2.20.1-0ubuntu2.22
canonical / apport = 2.20.1-0ubuntu2.23
canonical / apport = 2.20.1-0ubuntu2.25
canonical / apport = 2.20.1-0ubuntu2.26
canonical / apport = 2.20.1-0ubuntu2.27
canonical / apport = 2.20.1-0ubuntu2.28
canonical / apport = 2.20.1-0ubuntu2.30
canonical / apport = 2.20.1-0ubuntu2.30+esm1
canonical / apport = 2.20.9-0ubuntu1
canonical / apport = 2.20.9-0ubuntu2
canonical / apport = 2.20.9-0ubuntu3
canonical / apport = 2.20.9-0ubuntu4
canonical / apport = 2.20.9-0ubuntu5
canonical / apport = 2.20.9-0ubuntu6
canonical / apport = 2.20.9-0ubuntu7
canonical / apport = 2.20.9-0ubuntu7.1
canonical / apport = 2.20.9-0ubuntu7.2
canonical / apport = 2.20.9-0ubuntu7.3
canonical / apport = 2.20.9-0ubuntu7.4
canonical / apport = 2.20.9-0ubuntu7.5
canonical / apport = 2.20.9-0ubuntu7.6
canonical / apport = 2.20.9-0ubuntu7.7
canonical / apport = 2.20.9-0ubuntu7.8
canonical / apport = 2.20.9-0ubuntu7.9
canonical / apport = 2.20.9-0ubuntu7.10
canonical / apport = 2.20.9-0ubuntu7.11
canonical / apport = 2.20.9-0ubuntu7.12
canonical / apport = 2.20.9-0ubuntu7.13
canonical / apport = 2.20.9-0ubuntu7.14
canonical / apport = 2.20.9-0ubuntu7.15
canonical / apport = 2.20.9-0ubuntu7.16
canonical / apport = 2.20.9-0ubuntu7.17
canonical / apport = 2.20.9-0ubuntu7.18
canonical / apport = 2.20.9-0ubuntu7.19
canonical / apport = 2.20.9-0ubuntu7.20
canonical / apport = 2.20.9-0ubuntu7.21
canonical / apport = 2.20.9-0ubuntu7.23
canonical / apport = 2.20.9-0ubuntu7.24
canonical / apport = 2.20.11-0ubuntu8
canonical / apport = 2.20.11-0ubuntu9
canonical / apport = 2.20.11-0ubuntu10
canonical / apport = 2.20.11-0ubuntu11
canonical / apport = 2.20.11-0ubuntu12
canonical / apport = 2.20.11-0ubuntu13
canonical / apport = 2.20.11-0ubuntu14
canonical / apport = 2.20.11-0ubuntu15
canonical / apport = 2.20.11-0ubuntu16
canonical / apport = 2.20.11-0ubuntu17
canonical / apport = 2.20.11-0ubuntu18
canonical / apport = 2.20.11-0ubuntu19
canonical / apport = 2.20.11-0ubuntu20
canonical / apport = 2.20.11-0ubuntu21
canonical / apport = 2.20.11-0ubuntu22
canonical / apport = 2.20.11-0ubuntu23
canonical / apport = 2.20.11-0ubuntu24
canonical / apport = 2.20.11-0ubuntu25
canonical / apport = 2.20.11-0ubuntu26
canonical / apport = 2.20.11-0ubuntu27
canonical / apport = 2.20.11-0ubuntu27.2
canonical / apport = 2.20.11-0ubuntu27.3
canonical / apport = 2.20.11-0ubuntu27.4
canonical / apport = 2.20.11-0ubuntu27.5
canonical / apport = 2.20.11-0ubuntu27.6
canonical / apport = 2.20.11-0ubuntu27.7
canonical / apport = 2.20.11-0ubuntu27.8
canonical / apport = 2.20.11-0ubuntu27.9
canonical / apport = 2.20.11-0ubuntu27.10
canonical / apport = 2.20.11-0ubuntu27.11
canonical / apport = 2.20.11-0ubuntu27.12
canonical / apport = 2.20.11-0ubuntu27.13
canonical / apport = 2.20.11-0ubuntu27.14
canonical / apport = 2.20.11-0ubuntu27.16
canonical / apport = 2.20.11-0ubuntu27.17
canonical / apport = 2.20.11-0ubuntu27.18
canonical / apport = 2.20.11-0ubuntu28
canonical / apport = 2.20.11-0ubuntu29
canonical / apport = 2.20.11-0ubuntu30
canonical / apport = 2.20.11-0ubuntu31
canonical / apport = 2.20.11-0ubuntu32
canonical / apport = 2.20.11-0ubuntu33
canonical / apport = 2.20.11-0ubuntu34
canonical / apport = 2.20.11-0ubuntu35
canonical / apport = 2.20.11-0ubuntu36
canonical / apport = 2.20.11-0ubuntu37
canonical / apport = 2.20.11-0ubuntu38
canonical / apport = 2.20.11-0ubuntu39
canonical / apport = 2.20.11-0ubuntu40
canonical / apport = 2.20.11-0ubuntu41
canonical / apport = 2.20.11-0ubuntu42
canonical / apport = 2.20.11-0ubuntu43
canonical / apport = 2.20.11-0ubuntu44
canonical / apport = 2.20.11-0ubuntu45
canonical / apport = 2.20.11-0ubuntu46
canonical / apport = 2.20.11-0ubuntu47
canonical / apport = 2.20.11-0ubuntu48
canonical / apport = 2.20.11-0ubuntu49
canonical / apport = 2.20.11-0ubuntu50
canonical / apport = 2.20.11-0ubuntu50.1
canonical / apport = 2.20.11-0ubuntu50.2
canonical / apport = 2.20.11-0ubuntu50.3
canonical / apport = 2.20.11-0ubuntu50.5
canonical / apport = 2.20.11-0ubuntu50.7
canonical / apport = 2.20.11-0ubuntu51
canonical / apport = 2.20.11-0ubuntu52
canonical / apport = 2.20.11-0ubuntu53
canonical / apport = 2.20.11-0ubuntu54
canonical / apport = 2.20.11-0ubuntu55
canonical / apport = 2.20.11-0ubuntu56
canonical / apport = 2.20.11-0ubuntu57
canonical / apport = 2.20.11-0ubuntu58
canonical / apport = 2.20.11-0ubuntu59
canonical / apport = 2.20.11-0ubuntu60
canonical / apport = 2.20.11-0ubuntu61
canonical / apport = 2.20.11-0ubuntu62
canonical / apport = 2.20.11-0ubuntu63
canonical / apport = 2.20.11-0ubuntu64
canonical / apport = 2.20.11-0ubuntu65
canonical / apport = 2.20.11-0ubuntu65.1

Frequently Asked Questions

A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.

CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.

A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.

Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.

Use a simple, repeatable triage model: focus first on externally exposed assets, high-value systems (identity, VPN, email, production), vulnerabilities with known exploits, and issues that enable remote code execution or privilege escalation. Then enforce patch SLAs and track progress using consistent metrics so remediation is steady, not reactive.

SynScan combines attack surface monitoring and continuous security auditing to keep your inventory current, flag high-impact vulnerabilities early, and help you turn raw findings into a practical remediation plan.