CVSS: 9.8EPSS: 0%CPEs: 21EXPL: 0CVE-2017-18922 – libvncserver: websocket decoding buffer overflow
https://notcve.org/view.php?id=CVE-2017-18922
It was discovered that websockets.c in LibVNCServer prior to 0.9.12 did not properly decode certain WebSocket frames. A malicious attacker could exploit this by sending specially crafted WebSocket frames to a server, causing a heap-based buffer overflow. Se detectó que el archivo websockets.c en LibVNCServer versiones anteriores a 0.9.12, no decodificaba apropiadamente determinados tramas de WebSocket. Un atacante malicioso podría explotar esto mediante el envío de tramas de WebSocket especialmente diseñadas hacia un servidor, causando un desbordamiento del búfer en la región heap de la memoria A flaw was found in libvncserver. A heap-based buffer overflow within the websocket decoding functionality is possible, which can lead to exploitation by a malicious attacker to overwrite a function pointer. • http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00020.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00028.html 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 http://www.openwall.com/lists/oss-security/2020/06/30/3 https://bugzilla.redhat.com/show_bug.cgi?id=1852356 https://cer • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 0%CPEs: 21EXPL: 0CVE-2020-14396
https://notcve.org/view.php?id=CVE-2020-14396
An issue was discovered in LibVNCServer before 0.9.13. libvncclient/tls_openssl.c has a NULL pointer dereference. Se detectó un problema en LibVNCServer versiones anteriores a 0.9.13. La biblioteca libvncclient/tls_openssl.c presenta una desreferencia del puntero NULL • https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf https://github.com/LibVNC/libvncserver/commit/33441d90a506d5f3ae9388f2752901227e430553 https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13 https://usn.ubuntu.com/4434-1 • CWE-476: NULL Pointer Dereference •
CVSS: 7.5EPSS: 1%CPEs: 22EXPL: 0CVE-2020-14397 – libvncserver: libvncserver/rfbregion.c has a NULL pointer dereference
https://notcve.org/view.php?id=CVE-2020-14397
An issue was discovered in LibVNCServer before 0.9.13. libvncserver/rfbregion.c has a NULL pointer dereference. Se detectó un problema en LibVNCServer versiones anteriores a 0.9.13. La biblioteca libvncserver/rfbregion.c presenta una desreferencia del puntero NULL • 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/38e98ee61d74f5f5ab4aa4c77146faad1962d6d0 https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13 https://lists.debian.org/debian-lts-announce/2020&#x • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-476: NULL Pointer Dereference •
CVSS: 7.5EPSS: 0%CPEs: 22EXPL: 0CVE-2020-14398
https://notcve.org/view.php?id=CVE-2020-14398
An issue was discovered in LibVNCServer before 0.9.13. An improperly closed TCP connection causes an infinite loop in libvncclient/sockets.c. Se detectó un problema en LibVNCServer versiones anteriores a 0.9.13. Una conexión TCP cerrada inapropiadamente causa un bucle infinito en la biblioteca libvncclient/sockets.c • 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/57433015f856cc12753378254ce4f1c78f5d9c7b https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13 https://usn.ubuntu.com/4434-1 • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop') •
CVSS: 7.5EPSS: 1%CPEs: 8EXPL: 0CVE-2020-14399
https://notcve.org/view.php?id=CVE-2020-14399
An issue was discovered in LibVNCServer before 0.9.13. Byte-aligned data is accessed through uint32_t pointers in libvncclient/rfbproto.c. NOTE: there is reportedly "no trust boundary crossed. **EN DISPUTA** Se detectó un problema en LibVNCServer versiones anteriores a 0.9.13. Los datos Byte-aligned son accedidos por medio de punteros uint32_t en la biblioteca libvncclient/rfbproto.c. • 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://bugzilla.redhat.com/show_bug.cgi?id=1860354 https://github.com/LibVNC/libvncserver/commit/23e5cbe6b090d7f22982aee909a6a618174d3c2d https://github.com/LibVNC/libvncserver/compare/LibVNCServer-0.9.12...LibVNCServer-0.9.13 https://lists.debian.org/debian-lts-announce/2020/06/msg000 •