Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2017-7393

Double Free

Published: Apr 01, 2017 | Modified: Apr 20, 2025
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
6.5 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P
RedHat/V2
RedHat/V3
6.5 MODERATE
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2017-7393
CWEhttps://cwe.mitre.org/data/definitions/415.html

In TigerVNC 1.7.1 (VNCSConnectionST.cxx VNCSConnectionST::fence), an authenticated client can cause a double free, leading to denial of service or potentially code execution.

Weakness

The product calls free() twice on the same memory address.

Affected Software

NameVendorStart VersionEnd Version
TigervncTigervnc1.7.1 (including)1.7.1 (including)
Red Hat Enterprise Linux 7RedHatfltk-0:1.3.4-1.el7*
Red Hat Enterprise Linux 7RedHattigervnc-0:1.8.0-1.el7*
TigervncUbuntuartful*
TigervncUbuntuupstream*
TigervncUbuntuzesty*

Potential Mitigations

References

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