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CVSS: 5.9EPSS: 0%CPEs: 1EXPL: 0

01 Oct 2017 — In lib/ofp-util.c in Open vSwitch (OvS) before 2.8.1, there are multiple memory leaks while parsing malformed OpenFlow group mod messages. NOTE: the vendor disputes the relevance of this report, stating "it can only be triggered by an OpenFlow controller, but OpenFlow controllers have much more direct and powerful ways to force Open vSwitch to allocate memory, such as by inserting flows into the flow table." En lib/ofp-util.c en Open vSwitch (OvS) en versiones anteriores a 2.8.1, hay múltiples fugas de memo... • https://mail.openvswitch.org/pipermail/ovs-dev/2017-September/339085.html • CWE-772: Missing Release of Resource after Effective Lifetime •

CVSS: 8.8EPSS: 0%CPEs: 1EXPL: 0

29 May 2017 — In Open vSwitch (OvS) 2.5.0, a malformed IP packet can cause the switch to read past the end of the packet buffer due to an unsigned integer underflow in `lib/flow.c` in the function `miniflow_extract`, permitting remote bypass of the access control list enforced by the switch. En Open vSwitch (OvS) versión 2.5.0, un paquete IP malformado puede hacer que el conmutador lea más allá del final del búfer de paquetes debido a un desbordamiento de enteros sin signo en `lib/flow.c` en la función` miniflow_extract`... • https://mail.openvswitch.org/pipermail/ovs-dev/2016-July/319503.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •

CVSS: 6.5EPSS: 0%CPEs: 1EXPL: 0

29 May 2017 — In Open vSwitch (OvS) 2.7.0, while parsing an OpenFlow role status message, there is a call to the abort() function for undefined role status reasons in the function `ofp_print_role_status_message` in `lib/ofp-print.c` that may be leveraged toward a remote DoS attack by a malicious switch. En Open vSwitch (OvS) versión 2.7.0, mientras se analiza un mensaje de estado de rol de OpenFlow, se llama a la función abort() por motivos de estado de rol indefinido en la función “ofp_print_role_status_message” en la b... • https://access.redhat.com/errata/RHSA-2017:2418 • CWE-20: Improper Input Validation •

CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 0

29 May 2017 — In lib/conntrack.c in the firewall implementation in Open vSwitch (OvS) 2.6.1, there is a buffer over-read while parsing malformed TCP, UDP, and IPv6 packets in the functions `extract_l3_ipv6`, `extract_l4_tcp`, and `extract_l4_udp` that can be triggered remotely. En la biblioteca lib/conntrack.c en la implementación del firewall en Open vSwitch (OvS) versión 2.6.1, se presenta una lectura excesiva del búfer mientras se analizan los paquetes TCP, UDP e IPv6 malformados en las funciones “extract_l3_ipv6”, “e... • https://access.redhat.com/errata/RHSA-2017:2418 • CWE-122: Heap-based Buffer Overflow CWE-125: Out-of-bounds Read •

CVSS: 9.8EPSS: 1%CPEs: 1EXPL: 0

29 May 2017 — In Open vSwitch (OvS) v2.7.0, there is a buffer over-read while parsing the group mod OpenFlow message sent from the controller in `lib/ofp-util.c` in the function `ofputil_pull_ofp15_group_mod`. En Open vSwitch (OvS) versión 2.7.0, se presenta una lectura excesiva del búfer mientras se analiza el mensaje group mod OpenFlow enviado desde el controlador en la biblioteca “lib/ofp-util.c” en la función “ofputil_pull_ofp15_group_mod”. A buffer over-read issue was found in Open vSwitch (OvS) which emerged while ... • https://access.redhat.com/errata/RHSA-2017:2418 • CWE-122: Heap-based Buffer Overflow CWE-125: Out-of-bounds Read •

CVSS: 9.8EPSS: 7%CPEs: 12EXPL: 0

23 May 2017 — In Open vSwitch (OvS) 2.7.0, while parsing an OFPT_QUEUE_GET_CONFIG_REPLY type OFP 1.0 message, there is a buffer over-read that is caused by an unsigned integer underflow in the function `ofputil_pull_queue_get_config_reply10` in `lib/ofp-util.c`. En Open vSwitch (OvS) versión 2.7.0, mientras analiza un mensaje OFPT_QUEUE_GET_CONFIG_REPLY tipo OFP versión 1.0, se presenta una lectura excesiva búfer causada por un desbordamiento de enteros sin signo en la función “ofputil_pull_queue_get_config_reply10” en l... • https://access.redhat.com/errata/RHSA-2017:2418 • CWE-190: Integer Overflow or Wraparound CWE-191: Integer Underflow (Wrap or Wraparound) •

CVSS: 9.8EPSS: 8%CPEs: 6EXPL: 0

29 Mar 2016 — Buffer overflow in lib/flow.c in ovs-vswitchd in Open vSwitch 2.2.x and 2.3.x before 2.3.3 and 2.4.x before 2.4.1 allows remote attackers to execute arbitrary code via crafted MPLS packets, as demonstrated by a long string in an ovs-appctl command. Desbordamiento de buffer en lib/flow.c en ovs-vswitchd en Open vSwitch 2.2.x y 2.3.x en versiones anteriores a 2.3.3 y 2.4.x en versiones anteriores a 2.4.1 permite a atacantes remotos ejecutar código arbitrario a través de paquetes MPLS manipulados, según lo dem... • http://openvswitch.org/pipermail/announce/2016-March/000082.html • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer CWE-121: Stack-based Buffer Overflow •

CVSS: 5.5EPSS: 0%CPEs: 1EXPL: 0

07 Aug 2012 — Open vSwitch 1.4.2 uses world writable permissions for (1) /var/lib/openvswitch/pki/controllerca/incoming/ and (2) /var/lib/openvswitch/pki/switchca/incoming/, which allows local users to delete and overwrite arbitrary files. Open vSwitch v1.4.2 utiliza permisos world writable para (1) /var/lib/openvswitch/pki/controllerca/incoming/ y (2) /var/lib/openvswitch/pki/switchca/incoming/, lo que permite a usuarios locales eliminar y sobrescribir ficheros. • http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=683665 • CWE-264: Permissions, Privileges, and Access Controls •