CVE-2020-14403 — Out-of-bounds Write in Project Libvncserver

CWE-787 — Out-of-bounds WriteCWE-119 — Improper Restriction of Operations within the Bounds of a Memory BufferCWE-125 — Out-of-bounds Read11 documents8 sources
Severity
5.4MEDIUMNVD
EPSS
1.1%
top 21.80%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
10
Libvncserver Project LibvncserverSiemens Simatic Itc1500 FirmwareSiemens Simatic Itc1500 PRO Firmware+7 more
Timeline
PublishedJun 17
Latest updateMay 24

Description

An issue was discovered in LibVNCServer before 0.9.13. libvncserver/hextile.c allows out-of-bounds access via encodings.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:LExploitability: 2.8 | Impact: 2.5

Affected Packages8 packages

▶Debianlibvncserver_project/libvncserver< 0.9.13+dfsg-1+3
▶NVDsiemens/simatic_itc1500_firmware3.0.0.0 — 3.2.1.0
▶NVDsiemens/simatic_itc1900_firmware3.0.0.0 — 3.2.1.0
▶NVDsiemens/simatic_itc2200_firmware3.0.0.0 — 3.2.1.0

Also affects: Debian Linux 8.0, 9.0, Ubuntu Linux 14.04, 16.04, 18.04, 18.10, 20.04

Patches

Patch: cert-portal.siemens.com ↗Patch: github.com ↗Patch: cert-portal.siemens.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-x76c-7x48-932f: An issue was discovered in LibVNCServer before 0↗2022-05-24
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OSV
CVE-2020-14403: An issue was discovered in LibVNCServer before 0↗2020-06-17
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CVEList
CVE-2020-14403: An issue was discovered in LibVNCServer before 0↗2020-06-17
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📋Vendor Advisories

4
Ubuntu
Vino vulnerabilities↗2020-10-07
▶
Ubuntu
LibVNCServer vulnerabilities↗2020-07-23
▶
Red Hat
libvncserver: libvncserver/hextile.c allows out-of-bounds access via encodings↗2020-06-17
▶
Debian
CVE-2020-14403: libvncserver - An issue was discovered in LibVNCServer before 0.9.13. libvncserver/hextile.c al...↗2020
▶

💬Community

3
Bugzilla
CVE-2020-14403 libvncserver: libvncserver/hextile.c allows out-of-bounds access via encodings [fedora-all]↗2020-07-24
▶
Bugzilla
CVE-2020-14403 libvncserver: libvncserver/hextile.c allows out-of-bounds access via encodings↗2020-07-24
▶
Bugzilla
CVE-2020-14403 libvncserver: libvncserver/hextile.c allows out-of-bounds access via encodings [epel-7]↗2020-07-24
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CVE-2020-14403 — Out-of-bounds Write | cvebase