CVE-2019-20788

CWE-190 — Integer OverflowCWE-787 — Out-of-bounds WriteCWE-122 — Heap-based Buffer Overflow10 documents8 sources
Severity
9.8CRITICAL
EPSS
0.8%
top 26.02%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
9
Siemens Simatic Itc1500 FirmwareSiemens Simatic Itc1500 PRO FirmwareSiemens Simatic Itc1900 Firmware+6 more
Timeline
PublishedApr 23
Latest updateMay 24

Description

libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape integer overflow and heap-based buffer overflow via a large height or width value. NOTE: this may overlap CVE-2019-15690.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages8 packages

▶Debianlibvncserver< 0.9.12+dfsg-9+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

Patches

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

🔴Vulnerability Details

3
GHSA
GHSA-7397-jpw5-q274: libvncclient/cursor↗2022-05-24
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CVEList
CVE-2019-20788: libvncclient/cursor↗2020-04-23
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OSV
CVE-2019-20788: libvncclient/cursor↗2020-04-23
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📋Vendor Advisories

3
Ubuntu
LibVNCServer vulnerabilities↗2020-07-01
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Red Hat
libvncserver: integer overflow and heap-based buffer overflow in libvncclient/cursor.c in HandleCursorShape function↗2019-11-17
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Debian
CVE-2019-20788: libvncserver - libvncclient/cursor.c in LibVNCServer through 0.9.12 has a HandleCursorShape int...↗2019
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💬Community

3
Bugzilla
CVE-2019-20788 libvncserver: integer overflow and heap-based buffer overflow in libvncclient/cursor.c in HandleCursorShape function [fedora-all]↗2020-04-30
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Bugzilla
CVE-2019-20788 libvncserver: integer overflow and heap-based buffer overflow in libvncclient/cursor.c in HandleCursorShape function↗2020-04-30
▶
Bugzilla
CVE-2019-20788 libvncserver: integer overflow and heap-based buffer overflow in libvncclient/cursor.c in HandleCursorShape function [epel-7]↗2020-04-30
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