CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
AI Score
Confidence
High
EPSS
Percentile
98.7%
The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier allows remote attackers to cause a denial of service (divide-by-zero error and server crash) via a zero value in the scaling factor in a (1) PalmVNCSetScaleFactor or (2) SetScale message.
Vendor | Product | Version | CPE |
---|---|---|---|
libvncserver | libvncserver | * | cpe:2.3:a:libvncserver:libvncserver:*:*:*:*:*:*:*:* |
debian | debian_linux | 7.0 | cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* |
canonical | ubuntu_linux | 12.04 | cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* |
canonical | ubuntu_linux | 14.04 | cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* |
lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
seclists.org/oss-sec/2014/q3/639
secunia.com/advisories/61506
secunia.com/advisories/61682
www.debian.org/security/2014/dsa-3081
www.ocert.org/advisories/ocert-2014-007.html
www.openwall.com/lists/oss-security/2014/09/25/11
www.securityfocus.com/bid/70094
www.ubuntu.com/usn/USN-2365-1
github.com/newsoft/libvncserver/commit/05a9bd41a8ec0a9d580a8f420f41718bdd235446
lists.debian.org/debian-lts-announce/2019/10/msg00042.html
security.gentoo.org/glsa/201507-07
usn.ubuntu.com/4587-1/