CVSS: 6.5EPSS: 0%CPEs: 17EXPL: 0CVE-2020-14401
https://notcve.org/view.php?id=CVE-2020-14401
An issue was discovered in LibVNCServer before 0.9.13. libvncserver/scale.c has a pixel_value integer overflow. Se detectó un problema en LibVNCServer versiones anteriores a 0.9.13. La biblioteca libvncserver/scale.c presenta un desbordamiento de enteros en la función pixel_value • http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00033.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00055.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00066.html https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf https://github.com/LibVNC/libvncserver/commit/a6788d1da719ae006605b78d22f5a9f170b423af https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13 https://lists.debian.org/debian-lts-announce/2020&#x • CWE-190: Integer Overflow or Wraparound •
CVSS: 7.5EPSS: 1%CPEs: 4EXPL: 0CVE-2010-5304
https://notcve.org/view.php?id=CVE-2010-5304
A NULL pointer dereference flaw was found in the way LibVNCServer before 0.9.9 handled certain ClientCutText message. A remote attacker could use this flaw to crash the VNC server by sending a specially crafted ClientCutText message from a VNC client. Se encontró un fallo de desreferencia del puntero NULL en la manera en que LibVNCServer versiones anteriores a 0.9.9 manejaba determinado mensaje de ClientCutText. Un atacante remoto podría utilizar este fallo para bloquear el servidor VNC mediante el envío de un mensaje ClientCutText especialmente diseñado desde un cliente VNC. • http://lists.fedoraproject.org/pipermail/package-announce/2014-October/139654.html http://lists.fedoraproject.org/pipermail/package-announce/2014-October/139814.html http://lists.fedoraproject.org/pipermail/package-announce/2014-October/140219.html http://lists.fedoraproject.org/pipermail/package-announce/2014-September/139445.html http://seclists.org/oss-sec/2014/q3/639 http://www.openwall.com/lists/oss-security/2014/09/23/6 • CWE-476: NULL Pointer Dereference •
CVSS: 9.8EPSS: 1%CPEs: 14EXPL: 1CVE-2018-7225 – libvncserver: Improper input sanitization in rfbProcessClientNormalMessage in rfbserver.c
https://notcve.org/view.php?id=CVE-2018-7225
An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets. Se ha descubierto un problema en LibVNCServer hasta la versión 0.9.11. rfbProcessClientNormalMessage() en rfbserver.c no sanea msg.cct.length, lo que conduce a un acceso a datos no inicializados y potencialmente sensibles o, posiblemente, a otro tipo de impacto sin especificar (por ejemplo, un desbordamiento de enteros) mediante paquetes VNC especialmente manipulados. • http://www.openwall.com/lists/oss-security/2018/02/18/1 http://www.securityfocus.com/bid/103107 https://access.redhat.com/errata/RHSA-2018:1055 https://github.com/LibVNC/libvncserver/issues/218 https://lists.debian.org/debian-lts-announce/2018/03/msg00035.html https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html https://se • CWE-190: Integer Overflow or Wraparound CWE-805: Buffer Access with Incorrect Length Value •
CVSS: 9.8EPSS: 1%CPEs: 1EXPL: 0CVE-2016-9942
https://notcve.org/view.php?id=CVE-2016-9942
Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions. Desbordamiento de búfer basado en memoria dinámica en ultra.c en LibVNCClient en LibVNCServer en versiones anteriores a 0.9.11 permite a servidores remotos provocar una denegación de servicio (caída de aplicación) o posiblemente ejecutar código arbitrario a través de un mensaje FramebufferUpdate manipulado con el título de tipo Ultra, de manera que la longitud de la carga útil LZO descomprimida excede lo especificado por las dimensiones del azulejo. • http://www.debian.org/security/2017/dsa-3753 http://www.securityfocus.com/bid/95170 https://github.com/LibVNC/libvncserver/pull/137 https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11 https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html https://security.gentoo.org/glsa/201702-24 https://usn.ubuntu.com/4587-1 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •
CVSS: 9.8EPSS: 1%CPEs: 1EXPL: 0CVE-2016-9941
https://notcve.org/view.php?id=CVE-2016-9941
Heap-based buffer overflow in rfbproto.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message containing a subrectangle outside of the client drawing area. Desbordamiento de búfer basado en memoria dinámica en rfbproto.c en LibVNCClient en LibVNCServer en versiones anteriores a 0.9.11 permite a servidores remotos provocar una denegación de servicio (caída de aplicación) o posiblemente ejecutar código arbitrario a través de un mensaje FramebufferUpdate manipulado que contiene un subrectángulo fuera del área de dibujo del cliente. • http://www.debian.org/security/2017/dsa-3753 http://www.securityfocus.com/bid/95170 https://github.com/LibVNC/libvncserver/pull/137 https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11 https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html https://security.gentoo.org/glsa/201702-24 https://usn.ubuntu.com/4587-1 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •