CVE-2018-20024
Ubuntu Security Notice USN-4547-1
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
LibVNC before commit 4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7 contains null pointer dereference in VNC client code that can result DoS.
LibVNC antes del commit con ID 4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7 contiene una desreferencia de puntero NULL en el código del cliente VNC que puede resultar en una denegación de servicio (DoS).
It was discovered that an information disclosure vulnerability existed in the LibVNCServer vendored in iTALC when sending a ServerCutText message. An attacker could possibly use this issue to expose sensitive information. It was discovered that the LibVNCServer and LibVNCClient vendored in iTALC incorrectly handled certain packet lengths. A remote attacker could possibly use this issue to obtain sensitive information, cause a denial of service, or execute arbitrary code. Various other issues were also addressed.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2018-12-10 CVE Reserved
- 2018-12-19 CVE Published
- 2024-08-05 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-476: NULL Pointer Dereference
CAPEC
References (11)
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://security.gentoo.org/glsa/201908-05 | 2020-10-23 | |
| https://security.gentoo.org/glsa/202006-06 | 2020-10-23 | |
| https://usn.ubuntu.com/3877-1 | 2020-10-23 | |
| https://usn.ubuntu.com/4547-1 | 2020-10-23 | |
| https://usn.ubuntu.com/4547-2 | 2020-10-23 | |
| https://usn.ubuntu.com/4587-1 | 2020-10-23 | |
| https://www.debian.org/security/2019/dsa-4383 | 2020-10-23 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| 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
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| 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
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| 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
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| 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
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| 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
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| 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
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