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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (6.75%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 6.75% probability · 94th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- libvncserver/libvncserver · oracle/solaris · debian/debian linux · canonical/ubuntu linux
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
- http://seclists.org/oss-sec/2014/q3/639Mailing List, Third Party Advisory
- http://secunia.com/advisories/61506Permissions Required, Third Party Advisory
- http://secunia.com/advisories/61682Permissions Required, Third Party Advisory
- http://ubuntu.com/usn/usn-2365-1Third Party Advisory
- http://www.debian.org/security/2014/dsa-3081Third Party Advisory
- http://www.ocert.org/advisories/ocert-2014-007.htmlThird Party Advisory, US Government Resource
- http://www.openwall.com/lists/oss-security/2014/09/25/11Mailing List, Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.htmlThird Party Advisory
- http://www.securityfocus.com/bid/70091
- https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812Exploit, Issue Tracking, Patch
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://security.gentoo.org/glsa/201507-07
- https://usn.ubuntu.com/4587-1/
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
- http://seclists.org/oss-sec/2014/q3/639Mailing List, Third Party Advisory
- http://secunia.com/advisories/61506Permissions Required, Third Party Advisory
- http://secunia.com/advisories/61682Permissions Required, Third Party Advisory
- http://ubuntu.com/usn/usn-2365-1Third Party Advisory
- http://www.debian.org/security/2014/dsa-3081Third Party Advisory
- http://www.ocert.org/advisories/ocert-2014-007.htmlThird Party Advisory, US Government Resource
- http://www.openwall.com/lists/oss-security/2014/09/25/11Mailing List, Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.htmlThird Party Advisory
- http://www.securityfocus.com/bid/70091
- https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812Exploit, Issue Tracking, Patch
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://security.gentoo.org/glsa/201507-07
- https://usn.ubuntu.com/4587-1/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.