CVE-2018-6307 is a heap use-after-free vulnerability in the server-side file transfer extension of LibVNC, affecting various distributions of Linux including Debian and Ubuntu, as well as the LibVNCServer project itself. This high-severity vulnerability (CVSS 8.1) allows for remote code execution with high impact on confidentiality, integrity, and availability, requiring no user interaction or privileges, but with high attack complexity. While no active exploitation, Metasploit, Nuclei, or ExploitDB entries are currently reported, the vulnerability has garnered some community discussion and media coverage, indicating awareness. It is not listed in the CISA KEV catalog, and its exploitability is considered inactive.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 0.9.12CPE matchmatch criteria | cpe:2.3:a:libvnc_project:libvncserver:*:*:*:*:*:*:*:* | ||
14.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* | ||
16.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* | ||
18.04CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* | ||
18.10CPE matchmatch criteria | cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.