16 results (0.011 seconds)

CVSS: 7.8EPSS: 0%CPEs: 101EXPL: 0

05 Jun 2023 — On the affected platforms running EOS, a malformed DHCP packet might cause the DHCP relay agent to restart. • https://www.arista.com/en/support/advisories-notices/security-advisory/17445-security-advisory-0087 • CWE-755: Improper Handling of Exceptional Conditions •

CVSS: 7.8EPSS: 0%CPEs: 81EXPL: 1

24 Jan 2023 — For certain systems running EOS, a Precision Time Protocol (PTP) packet of a management/signaling message with an invalid Type-Length-Value (TLV) causes the PTP agent to restart. Repeated restarts of the service will make the service unavailable. • https://www.arista.com/en/support/advisories-notices/security-advisory/15439-security-advisory-0076 • CWE-400: Uncontrolled Resource Consumption CWE-1284: Improper Validation of Specified Quantity in Input •

CVSS: 6.5EPSS: 0%CPEs: 19EXPL: 1

05 Aug 2022 — This advisory documents the impact of an internally found vulnerability in Arista EOS for security ACL bypass. The impact of this vulnerability is that the security ACL drop rule might be bypassed if a NAT ACL rule filter with permit action matches the packet flow. This could allow a host with an IP address in a range that matches the range allowed by a NAT ACL and a range denied by a Security ACL to be forwarded incorrectly as it should have been denied by the Security ACL. This can enable an ACL bypass. E... • https://www.arista.com/en/support/advisories-notices/security-advisory/15862-security-advisory-0078 • CWE-284: Improper Access Control •

CVSS: 9.1EPSS: 0%CPEs: 7EXPL: 1

14 Jan 2022 — An issue has recently been discovered in Arista EOS where the incorrect use of EOS's AAA API’s by the OpenConfig and TerminAttr agents could result in unrestricted access to the device for local users with nopassword configuration. Se ha detectado recientemente un problema en Arista EOS donde el uso incorrecto de las API AAA de EOS por parte de los agentes OpenConfig y TerminAttr podría resultar en un acceso no restringido al dispositivo para usuarios locales con una configuración sin contraseña • https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071 • CWE-285: Improper Authorization •

CVSS: 7.1EPSS: 0%CPEs: 11EXPL: 1

14 Jan 2022 — An issue has recently been discovered in Arista EOS where, under certain conditions, the service ACL configured for OpenConfig gNOI and OpenConfig RESTCONF might be bypassed, which results in the denied requests being forwarded to the agent. Se ha detectado recientemente un problema en Arista EOS donde, bajo determinadas condiciones, la ACL de servicio configurada para OpenConfig gNOI y OpenConfig RESTCONF podría saltarse, lo que hace que las peticiones denegadas se reenvíen al agente • https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071 • CWE-284: Improper Access Control •

CVSS: 4.3EPSS: 0%CPEs: 10EXPL: 0

19 Jan 2021 — A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in the forward.c:reply_query() if the reply destination address/port is used by the pending forwarded queries. However, it does not use the address/port to retrieve the exact forwarded query, substantially reducing the number of attempts an attacker on the network would have to perform to forge a reply and get it accepted by dnsmasq. This issue contrasts with RFC5452, which specifies a query's attrib... • https://bugzilla.redhat.com/show_bug.cgi?id=1889686 • CWE-358: Improperly Implemented Security Check for Standard •

CVSS: 4.3EPSS: 0%CPEs: 9EXPL: 0

19 Jan 2021 — A flaw was found in dnsmasq before version 2.83. When getting a reply from a forwarded query, dnsmasq checks in forward.c:reply_query(), which is the forwarded query that matches the reply, by only using a weak hash of the query name. Due to the weak hash (CRC32 when dnsmasq is compiled without DNSSEC, SHA-1 when it is) this flaw allows an off-path attacker to find several different domains all having the same hash, substantially reducing the number of attempts they would have to perform to forge a reply an... • https://bugzilla.redhat.com/show_bug.cgi?id=1889688 • CWE-326: Inadequate Encryption Strength •

CVSS: 4.3EPSS: 0%CPEs: 9EXPL: 1

19 Jan 2021 — A flaw was found in dnsmasq before version 2.83. When receiving a query, dnsmasq does not check for an existing pending request for the same name and forwards a new request. By default, a maximum of 150 pending queries can be sent to upstream servers, so there can be at most 150 queries for the same name. This flaw allows an off-path attacker on the network to substantially reduce the number of attempts that it would have to perform to forge a reply and have it accepted by dnsmasq. This issue is mentioned i... • https://github.com/knqyf263/dnspooq • CWE-290: Authentication Bypass by Spoofing CWE-358: Improperly Implemented Security Check for Standard •

CVSS: 5.3EPSS: 0%CPEs: 53EXPL: 1

28 Dec 2020 — In Arista EOS malformed packets can be incorrectly forwarded across VLAN boundaries in one direction. This vulnerability is only susceptible to exploitation by unidirectional traffic (ex. UDP) and not bidirectional traffic (ex. TCP). This affects: EOS 7170 platforms version 4.21.4.1F and below releases in the 4.21.x train; EOS X-Series versions 4.21.11M and below releases in the 4.21.x train; 4.22.6M and below releases in the 4.22.x train; 4.23.4M and below releases in the 4.23.x train; 4.24.2.1F and below ... • https://www.arista.com/en/support/advisories-notices/security-advisories/11996-security-advisory-56 •

CVSS: 5.9EPSS: 0%CPEs: 50EXPL: 1

28 Dec 2020 — In EVPN VxLAN setups in Arista EOS, specific malformed packets can lead to incorrect MAC to IP bindings and as a result packets can be incorrectly forwarded across VLAN boundaries. This can result in traffic being discarded on the receiving VLAN. This affects versions: 4.21.12M and below releases in the 4.21.x train; 4.22.7M and below releases in the 4.22.x train; 4.23.5M and below releases in the 4.23.x train; 4.24.2F and below releases in the 4.24.x train. En unas configuraciones EVPN VxLAN en Arista EOS,... • https://www.arista.com/en/support/advisories-notices/security-advisories/11997-security-advisory-57 •