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CVE-2019-15681

HIGH
7.5
CVSS Score
Published: October 29, 2019 at 04:04 PM UTC
Updated: June 17, 2026 at 02:20 AM UTC
15 products affected across 4 vendorsDebian LinuxUbuntu LinuxLibVNCServer

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Severity
HIGH7.5
Exploit prediction
EPSS 3%

Description

LibVNC commit before d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a contains a memory leak (CWE-655) in VNC server code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appear to be exploitable via network connectivity. These vulnerabilities have been fixed in commit d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Ubuntu Linux· Canonicalrubygems
95%
14.0416.0418.0418.10
Debian Linux· Debiandrupal
95%
8.09.0
LibVNCServer· Libvnc Project
95%
v < 0.9.12
Affected range stops below 0.9.12, so it looks safe — our inference, not a vendor statement
SIMATIC ITC1500 Firmware· Siemens
95%
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1500 (same device)
SIMATIC ITC1500 Pro Firmware· Siemens
95%
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1500-pro (same device)
SIMATIC ITC1900 Firmware· Siemens
95%
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1900 (same device)
SIMATIC ITC1900 Pro Firmware· Siemens
95%
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc1900-pro (same device)
SIMATIC ITC2200 Firmware· Siemens
95%
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc2200 (same device)
SIMATIC ITC2200 Pro Firmware· Siemens
95%
3.0.0.0 ≤ v < 3.2.1.0
Affected range stops below 3.2.1.0, so it looks safe — our inference, not a vendor statement
siemens-simatic-itc2200-pro (same device)
Simatic Itc1500· Siemensdevice
80%
All versions

References (12)

Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00027.html
Vendor Advisoryx_refsource_SUSEMailing ListThird Party Advisory
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00073.html
x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/LibVNC/libvncserver/commit/d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2019/10/msg00039.html
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-665

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