Improper input validation in Libvncserver
CVE-2014-6052
The HandleRFBServerMessage function in libvncclient/rfbproto.c in LibVNCServer 0.9.9 and earlier does not check certain malloc return values, which allows remote VNC servers to cause a denial of service (application crash) or possibly execute arbitrary code by specifying a large screen size in a (1) FramebufferUpdate, (2) ResizeFrameBuffer, or (3) PalmVNCReSizeFrameBuffer message.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v2 metric
CVSS v2 base score 7.5 (High). Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P. This CVE predates CVSS v3 and has no v3 score from NVD.
EPSS exploit prediction
EPSS: 0.068 (93.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.068 · newest: 0.068 · change: 0.000
Affected products
- Libvncserver
- Oracle Solaris — versions 11.3
- Canonical Ubuntu Linux — versions 12.04, 14.04
- Debian Linux — versions 7.0
Weakness classification (CWE)
References
- www.ocert.org/advisories/ocert-2014-007.html (US Government Resource, Third Party Advisory)
- secunia.com/advisories/61682 (Permissions Required, Third Party Advisory, third-party-advisory)
- lists.opensuse.org/opensuse-updates/2015-12/msg00022.html (vendor-advisory)
- secunia.com/advisories/61506 (Permissions Required, Third Party Advisory, third-party-advisory)
- github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812 (Exploit, Patch, Issue Tracking)
- www.openwall.com/lists/oss-security/2014/09/25/11 (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/oss-sec/2014/q3/639 (mailing-list, Mailing List, Third Party Advisory)
- ubuntu.com/usn/usn-2365-1 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201507-07 (vendor-advisory)
- www.securityfocus.com/bid/70091 (vdb-entry)