CVSS: 5.9EPSS: 1%CPEs: 9EXPL: 0CVE-2020-14422 – python: DoS via inefficiency in IPv{4,6}Interface classes
https://notcve.org/view.php?id=CVE-2020-14422
Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2. La biblioteca Lib/ipaddress.py en Python versiones hasta 3.8.3, calcula inapropiadamente los valores de hash en las clases IPv4Interface e IPv6Interface, lo que podría permitir a un atacante remoto causar una denegación de servicio si una aplicación está afectada por el desempeño de un diccionario que contiene objetos de IPv4Interface o IPv6Interface, y este atacante puede causar que muchas entradas de diccionario sean creadas. Esto esta corregido en las versiones: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2 A vulnerability was found in the way the ipaddress python module computes hash values in the IPv4Interface and IPv6Interface classes. This flaw allows an attacker to create many dictionary entries, due to the performance of a dictionary containing the IPv4Interface or IPv6Interface objects, possibly resulting in a denial of service. • http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00003.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00006.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00032.html http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00041.html https://bugs.python.org/issue41004 https://github.com/python/cpython/pull/20956 https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html https://lists.debian.org/debian-lts-announce/2023/ • CWE-330: Use of Insufficiently Random Values CWE-400: Uncontrolled Resource Consumption CWE-682: Incorrect Calculation •
CVSS: 4.9EPSS: 0%CPEs: 11EXPL: 0CVE-2020-8619 – A buffer boundary check assertion in rdataset.c can fail incorrectly during zone transfer
https://notcve.org/view.php?id=CVE-2020-8619
In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk ("*") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable. En las versiones ISC BIND9 BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: A menos que un servidor de nombres proporcione un servicio autorizado para una o más zonas y al menos una zona contenga una entrada sin terminal vacía que contenga un carácter asterisco ("*"), este defecto no puede ser encontrado. Un posible atacante al que se le permite cambiar el contenido de la zona, podría introducir teóricamente dicho registro para explotar esta condición y causar una denegación de servicio, aunque consideramos que el uso de este vector es poco probable porque cualquier ataque requeriría de un nivel de privilegio significativo y que sea fácilmente rastreable A flaw was found in bind when an asterisk character is present in an empty non-terminal location within the DNS graph. This flaw could trigger an assertion failure, causing bind to crash. • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html https://kb.isc.org/docs/cve-2020-8619 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNFTTYJ5JJJJ6QG3AHXJGDIIEYMDFWFW https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EIOXMJX4N3LBKC65OXNBE52W4GAS7QEX https://security.netapp.com/advisory/ntap-20200625-0003 https://usn.ubuntu.com/4399-1 • CWE-404: Improper Resource Shutdown or Release CWE-617: Reachable Assertion •
CVSS: 4.9EPSS: 0%CPEs: 5EXPL: 0CVE-2020-8618 – A buffer boundary check assertion in rdataset.c can fail incorrectly during zone transfer
https://notcve.org/view.php?id=CVE-2020-8618
An attacker who is permitted to send zone data to a server via zone transfer can exploit this to intentionally trigger the assertion failure with a specially constructed zone, denying service to clients. Un atacante al que se le permite enviar datos de zona a un servidor mediante la transferencia de zona puede explotar esto para provocar intencionalmente el fallo de aserción con una zona especialmente construida, negando el servicio a los clientes • http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00041.html http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00044.html https://kb.isc.org/docs/cve-2020-8618 https://security.netapp.com/advisory/ntap-20200625-0003 https://usn.ubuntu.com/4399-1 • CWE-617: Reachable Assertion •
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') •