CVE-2020-14402
Ubuntu Security Notice USN-4434-1
Severity Score
5.4
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
-
*SSVC
Descriptions
An issue was discovered in LibVNCServer before 0.9.13. libvncserver/corre.c allows out-of-bounds access via encodings.
Se detectó un problema en LibVNCServer versiones anteriores a 0.9.13. La biblioteca libvncserver/corre.c permite un acceso fuera de límites por medio de codificaciones
Ramin Farajpour Cami discovered that LibVNCServer incorrectly handled certain malformed unix socket names. A remote attacker could exploit this with a crafted socket name, leading to a denial of service, or possibly execute arbitrary code. It was discovered that LibVNCServer did not properly access byte-aligned data. A remote attacker could possibly use this issue to cause LibVNCServer to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 16.04 LTS. Various other issues were also addressed.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2020-06-17 CVE Reserved
- 2020-06-17 CVE Published
- 2024-08-04 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-787: Out-of-bounds Write
CAPEC
References (10)
| URL | Tag | Source |
|---|---|---|
| https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13 | Release Notes | |
| https://lists.debian.org/debian-lts-announce/2020/06/msg00035.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2020/08/msg00045.html | Mailing List |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf | 2022-03-09 | |
| https://github.com/LibVNC/libvncserver/commit/74e8a70f2c9a5248d6718ce443e07c7ed314dfff | 2022-03-09 |
| URL | Date | SRC |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html | 2022-03-09 | |
| http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html | 2022-03-09 | |
| http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html | 2022-03-09 | |
| https://usn.ubuntu.com/4434-1 | 2022-03-09 | |
| https://usn.ubuntu.com/4573-1 | 2022-03-09 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Siemens Search vendor "Siemens" | Simatic Itc1500 Firmware Search vendor "Siemens" for product "Simatic Itc1500 Firmware" | >= 3.0.0.0 < 3.2.1.0 Search vendor "Siemens" for product "Simatic Itc1500 Firmware" and version " >= 3.0.0.0 < 3.2.1.0" | - |
Affected
| in | Siemens Search vendor "Siemens" | Simatic Itc1500 Search vendor "Siemens" for product "Simatic Itc1500" | - | - |
Safe
|
| Siemens Search vendor "Siemens" | Simatic Itc1500 Pro Firmware Search vendor "Siemens" for product "Simatic Itc1500 Pro Firmware" | >= 3.0.0.0 < 3.2.1.0 Search vendor "Siemens" for product "Simatic Itc1500 Pro Firmware" and version " >= 3.0.0.0 < 3.2.1.0" | - |
Affected
| in | Siemens Search vendor "Siemens" | Simatic Itc1500 Pro Search vendor "Siemens" for product "Simatic Itc1500 Pro" | - | - |
Safe
|
| Siemens Search vendor "Siemens" | Simatic Itc1900 Firmware Search vendor "Siemens" for product "Simatic Itc1900 Firmware" | >= 3.0.0.0 < 3.2.1.0 Search vendor "Siemens" for product "Simatic Itc1900 Firmware" and version " >= 3.0.0.0 < 3.2.1.0" | - |
Affected
| in | Siemens Search vendor "Siemens" | Simatic Itc1900 Search vendor "Siemens" for product "Simatic Itc1900" | - | - |
Safe
|
| Siemens Search vendor "Siemens" | Simatic Itc1900 Pro Firmware Search vendor "Siemens" for product "Simatic Itc1900 Pro Firmware" | >= 3.0.0.0 < 3.2.1.0 Search vendor "Siemens" for product "Simatic Itc1900 Pro Firmware" and version " >= 3.0.0.0 < 3.2.1.0" | - |
Affected
| in | Siemens Search vendor "Siemens" | Simatic Itc1900 Pro Search vendor "Siemens" for product "Simatic Itc1900 Pro" | - | - |
Safe
|
| Siemens Search vendor "Siemens" | Simatic Itc2200 Firmware Search vendor "Siemens" for product "Simatic Itc2200 Firmware" | >= 3.0.0.0 < 3.2.1.0 Search vendor "Siemens" for product "Simatic Itc2200 Firmware" and version " >= 3.0.0.0 < 3.2.1.0" | - |
Affected
| in | Siemens Search vendor "Siemens" | Simatic Itc2200 Search vendor "Siemens" for product "Simatic Itc2200" | - | - |
Safe
|
| Siemens Search vendor "Siemens" | Simatic Itc2200 Pro Firmware Search vendor "Siemens" for product "Simatic Itc2200 Pro Firmware" | >= 3.0.0.0 < 3.2.1.0 Search vendor "Siemens" for product "Simatic Itc2200 Pro Firmware" and version " >= 3.0.0.0 < 3.2.1.0" | - |
Affected
| in | Siemens Search vendor "Siemens" | Simatic Itc2200 Pro Search vendor "Siemens" for product "Simatic Itc2200 Pro" | - | - |
Safe
|
| Libvnc Project Search vendor "Libvnc Project" | Libvncserver Search vendor "Libvnc Project" for product "Libvncserver" | <= 0.9.12 Search vendor "Libvnc Project" for product "Libvncserver" and version " <= 0.9.12" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | esm |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10" | - |
Affected
| ||||||
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04" | lts |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||