CVSS: 7.8EPSS: 0%CPEs: 13EXPL: 0CVE-2020-35498 – openvswitch: limitation in the OVS packet parsing in userspace leads to DoS
https://notcve.org/view.php?id=CVE-2020-35498
A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability. Se encontró una vulnerabilidad en openvswitch. Una limitación en la implementación del análisis de paquetes del espacio de usuario puede permitir a un usuario malicioso envíe un paquete especialmente diseñado, lo que hace que el megaflujo resultante en el kernel sea demasiado amplio, causando potencialmente una denegación de servicio. • https://bugzilla.redhat.com/show_bug.cgi?id=1908845 https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UJ4DXFJWMZ325ECZXPZOSK7BOEDJZHPR https://security.gentoo.org/glsa/202311-16 https://www.debian.org/security/2021/dsa-4852 https://www.openwall.com/lists/oss-security/2021/02/10/4 https://access.redhat.com/security/cve/CVE-2020-35498 • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.5EPSS: 0%CPEs: 37EXPL: 0CVE-2020-27827 – lldp/openvswitch: denial of service via externally triggered memory leak
https://notcve.org/view.php?id=CVE-2020-27827
A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability. Se encontró un fallo en múltiples versiones de OpenvSwitch. Los paquetes LLDP especialmente diseñados pueden causar que una memoria se pierda cuando se asignan datos para manejar TLV opcionales específicos, potencialmente causando una denegación de servicio. • https://bugzilla.redhat.com/show_bug.cgi?id=1921438 https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D https://mail.openvswitch.org/pipermail/ovs-dev/2021&# • CWE-400: Uncontrolled Resource Consumption •
CVSS: 7.5EPSS: 0%CPEs: 5EXPL: 1CVE-2018-17205 – openvswitch: Error during bundle commit in ofproto/ofproto.c:ofproto_rule_insert__() allows for crash
https://notcve.org/view.php?id=CVE-2018-17205
An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting ofproto_rule_insert__ in ofproto/ofproto.c. During bundle commit, flows that are added in a bundle are applied to ofproto in order. If a flow cannot be added (e.g., the flow action is a go-to for a group id that does not exist), OvS tries to revert back all previous flows that were successfully applied from the same bundle. This is possible since OvS maintains list of old flows that were replaced by flows from the bundle. While reinserting old flows, OvS has an assertion failure due to a check on rule state ! • https://access.redhat.com/errata/RHSA-2018:3500 https://access.redhat.com/errata/RHSA-2019:0053 https://access.redhat.com/errata/RHSA-2019:0081 https://github.com/openvswitch/ovs/commit/0befd1f3745055c32940f5faf9559be6a14395e6 https://usn.ubuntu.com/3873-1 https://access.redhat.com/security/cve/CVE-2018-17205 https://bugzilla.redhat.com/show_bug.cgi?id=1632525 • CWE-20: Improper Input Validation CWE-617: Reachable Assertion •
CVSS: 4.9EPSS: 0%CPEs: 6EXPL: 0CVE-2018-17206 – openvswitch: Buffer over-read in lib/ofp-actions.c:decode_bundle()
https://notcve.org/view.php?id=CVE-2018-17206
An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6. The decode_bundle function inside lib/ofp-actions.c is affected by a buffer over-read issue during BUNDLE action decoding. Se ha descubierto un problema en Open vSwitch, en versiones 2.7.x hasta la 2.7.6. La función decode_bundle dentro de lib/ofp-actions.c se ve afectada por un problema de sobrelectura de búfer durante la decodificación de la acción BUNDLE. An issue was discovered in Open vSwitch (OvS) 2.5.x through 2.5.5, 2.6.x through 2.6.3, 2.7.x through 2.7.6, 2.8.x through 2.8.4, and 2.9.x through 2.9.2 where the decode_bundle function inside lib/ofp-actions.c is affected by a buffer over-read issue during BUNDLE action decoding. A specially crafted flow update applied using the bundling feature of Open vSwitch could potentially cause a crash leading to a denial of service. • https://access.redhat.com/errata/RHSA-2018:3500 https://access.redhat.com/errata/RHSA-2019:0053 https://access.redhat.com/errata/RHSA-2019:0081 https://github.com/openvswitch/ovs/commit/9237a63c47bd314b807cda0bd2216264e82edbe8 https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html https://usn.ubuntu.com/3873-1 https://access.redhat.com/security/cve/CVE-2018-17206 https://bugzilla.redhat.com/show_bug.cgi?id=1632528 • CWE-125: Out-of-bounds Read •
CVSS: 4.3EPSS: 0%CPEs: 6EXPL: 0CVE-2018-17204 – openvswitch: Mishandle of group mods in lib/ofp-util.c:parse_group_prop_ntr_selection_method() allows for assertion failure
https://notcve.org/view.php?id=CVE-2018-17204
An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting parse_group_prop_ntr_selection_method in lib/ofp-util.c. When decoding a group mod, it validates the group type and command after the whole group mod has been decoded. The OF1.5 decoder, however, tries to use the type and command earlier, when it might still be invalid. This causes an assertion failure (via OVS_NOT_REACHED). ovs-vswitchd does not enable support for OpenFlow 1.5 by default. Se ha descubierto un problema en Open vSwitch (OvS) en versiones 2.7.x hasta la 2.7.6 que afecta a parse_group_prop_ntr_selection_method en lib/ofp-util.c. • https://access.redhat.com/errata/RHSA-2018:3500 https://access.redhat.com/errata/RHSA-2019:0053 https://access.redhat.com/errata/RHSA-2019:0081 https://github.com/openvswitch/ovs/commit/4af6da3b275b764b1afe194df6499b33d2bf4cde https://lists.debian.org/debian-lts-announce/2021/02/msg00032.html https://usn.ubuntu.com/3873-1 https://access.redhat.com/security/cve/CVE-2018-17204 https://bugzilla.redhat.com/show_bug.cgi?id=1632522 • CWE-20: Improper Input Validation CWE-617: Reachable Assertion •