CVE-2018-21247

CWE-909CWE-200 — Information Exposure9 documents7 sources
Severity
7.5HIGH
EPSS
1.5%
top 19.03%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
10
Siemens Simatic Itc1500 FirmwareSiemens Simatic Itc1500 PRO FirmwareSiemens Simatic Itc1900 Firmware+7 more
Timeline
PublishedJun 17
Latest updateMay 24

Description

An issue was discovered in LibVNCServer before 0.9.13. There is an information leak (of uninitialized memory contents) in the libvncclient/rfbproto.c ConnectToRFBRepeater function.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6

Affected Packages9 packages

▶Debianlibvncserver< 0.9.11+dfsg-1.2+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-355f-mpqr-3mwv: An issue was discovered in LibVNCServer before 0↗2022-05-24
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CVEList
CVE-2018-21247: An issue was discovered in LibVNCServer before 0↗2020-06-17
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OSV
CVE-2018-21247: An issue was discovered in LibVNCServer before 0↗2020-06-17
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📋Vendor Advisories

2
Red Hat
libvncserver: uninitialized memory contents are vulnerable to Information Leak↗2020-06-17
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Debian
CVE-2018-21247: libvncserver - An issue was discovered in LibVNCServer before 0.9.13. There is an information l...↗2018
▶

💬Community

3
Bugzilla
CVE-2018-21247 libvncserver: uninitialized memory contents are vulnerable to Information Leak [fedora-all]↗2020-06-23
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Bugzilla
CVE-2018-21247 libvncserver: uninitialized memory contents are vulnerable to Information Leak↗2020-06-23
▶
Bugzilla
CVE-2018-21247 libvncserver: uninitialized memory contents are vulnerable to Information Leak [epel-7]↗2020-06-23
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