Vulnerabilities

An Improper Handling of Undefined Parameters vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on EX Series devices allows an authenticated attacker with low privileges to cause a Denial-of-Service (DoS).<br /> <br /> If an attempt is made to subscribe to an unsupported telemetry sensor path on EX2300, EX3400, EX4000, EX4100 and EX4400 via gRPC, this causes the FPC to crash. This leads to a complete service outage until the module has automatically restarted. <br /> <br /> The following log message can be seen when this issue happens:<br /> <br /> agentd[]: AGENTD_RESOURCE_NOT_FOUND: No resource name found for <br /> <br /> <br /> This issue affects Junos OS on <br /> <br /> EX2300, EX3400, EX4000, EX4100 and EX4400<br /> <br /> devices:<br /> <br /> <br /> * all versions before 23.2R2-S7,<br /> * 23.4 versions before 23.4R2-S8,<br /> * 24.2 versions before 24.2R2-S5,<br /> * 24.4 versions before 24.4R2.

Hermes WebUI before 0.51.307 contains an authentication bypass vulnerability that allows unauthenticated remote attackers to circumvent local-origin IP restrictions on onboarding endpoints by supplying a spoofed X-Forwarded-For header with a loopback address. Attackers can exploit this bypass to perform server-side request forgery against internal services including cloud metadata endpoints, overwrite LLM provider configuration and API keys with attacker-controlled values, or initiate OAuth device-code flows to obtain persistent access tokens stored in auth.json.

Hermes WebUI before 0.51.788 contains an unauthenticated remote code execution vulnerability that allows remote attackers to execute arbitrary shell commands by accessing the embedded terminal API endpoints without credentials. Attackers can create a session, attach a PTY shell, and write arbitrary commands through the terminal input endpoint to achieve full command execution as the server process user via four sequential unauthenticated HTTP requests.

Cotonti Siena 0.9.26 and earlier contains a cross-site request forgery vulnerability that allows unauthenticated attackers to modify administrator configuration by tricking a logged-in administrator into submitting a forged POST request to the admin.php config update handler, which never invokes the application&amp;#39;s CSRF validation function. Attackers can disable the PFS module&amp;#39;s file extension whitelist by setting pfsfilecheck to 0, enabling any user with PFS access to upload and execute arbitrary PHP files on the server.

Cotonti Siena 0.9.26 and earlier contains a stored cross-site scripting vulnerability that allows authenticated users with PFS access to inject arbitrary script payloads by supplying malicious HTML in the ntitle parameter processed through the TXT filter in pfs.main.php. Attackers can create a folder with a crafted title containing script tags that are stored unescaped in the database and execute in the browser of any user who views the folder listing, including administrators.

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on MX Series allows adjacent subscribers to bypass configured firewall filters.<br /> <br /> On MX Series devices with MPC10/11, LC4800/9600, and MX304 with subscribers configured on static interfaces, ingress firewall filters are not enforced, so that neither protocol level nor upstream bandwidth limitation are in effect. <br /> <br /> <br /> This issue affects Junos OS on MX with MPC10/11, LC4800/9600/4802, and MX304:<br /> <br /> <br /> * 23.2 versions from 23.2R2-S1 before 23.2R2-S7,<br /> * 23.4 versions from 23.4R2 before 23.4R2-S7,<br /> * 24.2 versions before 24.2R2-S3,<br /> * 24.4 versions before 24.4R2-S2,<br /> * 25.2 versions before 25.2R2.

A Concurrent Execution using Shared Resource with Improper Synchronization (&amp;#39;Race Condition&amp;#39;) vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).<br /> <br /> As part of the stateful traffic processing on SRX Series devices flows are being established, and removed when not needed anymore. During the removal process the timeout of a flow should be set to 3 seconds and consequentially the flow should be removed shortly after. Due to a race condition occurring when setting the timeout there is a chance (the exact conditions are outside the attackers control) that the timeout is instead set to a very high value of larger than 10,000 seconds:<br /> <br /> <br /> <br /> user@host&gt; show security flow session | match timeout<br /> Session ID: 98784248524, Policy name: PROD-FLOW/4, HA State: Active, Timeout: 85250, Session State: Valid<br /> <br /> This will lead to an accumulation of flows which can be observed by an ever-increasing value of invalidated sessions in the output of &amp;#39;show security flow session summary&amp;#39;:<br /> <br /> user@host&gt; show security flow session summary | match invalid<br /> Invalidated sessions: 216931These sessions can&amp;#39;t be cleared manually with the &amp;#39;clear security flow session&amp;#39; command, which will either lead to forwarding to stop (and the system needs to be manually recovered with a reboot) or to a flowd core and automatic reboot.<br /> <br /> <br /> This issue affects Junos OS on SRX Series:<br /> <br /> <br /> * 24.2 versions before 24.2R2-S3,<br /> * 24.4 versions before 24.4R2-S1, 24.4R2-S2,<br /> * 25.2 versions before 25.2R1-S2, 25.2R2.<br /> <br /> <br /> <br /> <br /> This issue does not affect releases earlier than 24.2R1;

A Missing Synchronization vulnerability in the flow collector handler of Juniper Networks Junos OS Evolved on QFX Series allows an adjacent, unauthenticated attacker to cause a Denial-of-Service (DoS).<br /> <br /> <br /> When the reachability of an sFlow collector changes, the corresponding next-hop entry is updated. If this update occurs simultaneously with the sFlow thread accessing the next-hop data (which is outside the attackers control), it causes the evo-pfemand process to crash, impacting all traffic forwarding until the automatic process restart has completed.<br /> <br /> <br /> <br /> <br /> This issue affects Junos OS Evolved on QFX Series:<br /> <br /> <br /> * all 23.2 versions, <br /> * 23.4 versions before 23.4R2-S7-EVO,<br /> * 24.2 versions before 24.2R2-S5-EVO,<br /> * 24.4 versions before 24.4R2-S3-EVO,<br /> * 25.2 versions before 25.2R2-EVO.

An Improper Restriction of Communication Channel to Intended Endpoints vulnerability in Juniper Networks Junos OS Evolved allows an unauthenticated, network-based attacker to cause license exhaustion.<br /> <br /> <br /> Due to an incorrect initialization, a process which should only be able to communicate internally within the device, can be reached over the network via an open port. This leads to unauthorized access to the license management.<br /> <br /> This issue affects all Junos OS Evolved versions before 23.2R2-EVO.

A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on specific EX Series devices allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS).When sFlow is configured in a Virtual Chassis (VC) scenario with EX4100 Series or EX4400 Series devices, multicast traffic which is received on one VC member and sent out on another member leads to a memory leak and ultimately an FPC crash and restart.<br /> <br /> The leak can be monitored by watching the continuous increase of the buffer values in the output of:<br /> <br /> user@host&gt; show chassis fpc <br /> This issue affects Junos OS on EX4100 Series and EX4400:<br /> <br /> <br /> * all versions before 23.2R2-S7,<br /> * 23.4 versions before 23.4R2-S7,<br /> * 24.2 versions before 24.2R2-S4,<br /> * 24.4 versions before 24.4R2.

A Return of Pointer Value Outside of Expected Range vulnerability in the fileio library of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privilged attacker to cause a Denial-of-Service (DoS).<br /> <br /> On EX Series, QFX Series and MX Series a low-privileged attacker issuing a specific &amp;#39;show l2-learning&amp;#39; or &amp;#39;show ethernet-switching&amp;#39; command will cause an l2ald crash which will lead to a temporary service impact for all layer 2 services until the process has automatically restarted.<br /> <br /> This issue affects EX Series, QFX Series, MX Series:<br /> Junos OS:<br /> <br /> <br /> * all versions before 23.2R2-S7,<br /> * 23.4 versions before 23.4R2-S7,<br /> * 24.2 versions before 24.2R2,<br /> * 24.4 versions before 24.4R1-S2.<br /> <br /> <br /> <br /> Junos OS Evolved:<br /> * all versions before 23.2R2-S7-EVO,<br /> * 23.4 versions before 23.4R2-S8-EVO,<br /> * 24.2 versions before 24.2R2-EVO,<br /> * 24.4 versions before 24.4R1-S3-EVO.

An Out-of-bounds Write vulnerability in the http-gatekeeper (http-gk) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).<br /> <br /> If an SRX Series device is configured for remote-access VPN with pre-logon compliance check, a network-based attacker sending specifically formatted requests can trigger an out of bounds write leading to an http-gk process crash. This crash leads to unavailability of all services depending on the [ system services web-management ] configuration (like J-Web, remote access VPN and firewall authentication) until the process automatically restarts.<br /> <br /> This issue affects Junos OS on SRX Series:<br /> <br /> <br /> * 23.2 versions before 23.2R2-S7,<br /> * 23.4 versions before 23.4R2-S8,<br /> * 24.2 versions before 24.2R2-S4,<br /> * 24.4 versions before 24.4R2-S4,<br /> * 25.2 versions before 25.2R2,<br /> * 25.4 versions before 25.4R1-S1, 25.4R2.