PT-2018-17959 · Libvnc · Libvnc

Solardiz · Published 2018-02-19 · Updated 2019-08-09 · CVE-2018-7226

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions LibVNC/vncterm versions through 0.9.10

Description An issue was discovered in the vcSetXCutTextProc() function in VNConsole.c, potentially causing integer overflow or unspecified other impact due to missing sanitization of the client-specified message length. This could be exploited via a specially crafted VNC packet.

Recommendations For versions through 0.9.10, consider restricting access to the vcSetXCutTextProc() function until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2018-7226

Affected Products

Libvnc

References · 8

• https://github.com/LibVNC/vncterm/issues/6 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-7226 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-7226 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2018-7226 · Security Note
• https://ubuntu.com/security/CVE-2018-7226 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-7226 · Security Note
• https://security.gentoo.org/glsa/201908-05 · Vendor Advisory
• http://openwall.com/lists/oss-security/2018/02/18/2 · Note