Digi Security Center

RealPort CVEs

The attached document includes vulnerability findings from a report that Dragos submitted. These are CVEs that Dragos reported to us, Digi International. Included is a table of Digi International products that were reported as vulnerable by Dragos.

Ripple20 Public Disclosure

Digi International has recently become aware that CVE-2020-11901 is still impacting our NDS and NET+OS product lines, which were part of Ripple20 vulnerabilities. Digi has found that it is appropriate to patch the vulnerability. Please see our knowledge-based article for the patch releases related to this vulnerability.

Our development team has already developed a patch for this vulnerability and we strongly recommend that you apply the update as soon as possible to ensure the security of your device.

We take the security of our products very seriously and apologize for any inconvenience this may cause. If you have any questions or concerns, please do not hesitate to contact our support team.

Following up with Digi's previous announcement of WiFi Frag Attack.

Here is the link to our knowledge-based article that goes into detail on WiFi Frag Attack
Frag Attack Security Information

Security Update for OpenSSL Critical CVE’s: CVE-2022-3786 and CVE-2022-3602

Digi International is looking into the new Critical OpenSSL vulnerabilities, CVE-2022-3786, and CVE-2022-3602.

Currently, the EX50 and TX64 devices are vulnerable to CVE-2022-3786 and CVE-2022-3602. All other Digi Accelerated Linux (DAL) products are not affected. The EX50 and TX64 firmware will be updated to mitigate these vulnerabilities within the next patch release.

Digi Embedded Yocto version 4.0-r1 is currently vulnerable to CVE-2022-3786 and CVE-2022-3602 and will be updated to mitigate those vulnerabilities within the next patch release. All other versions of DEY are not affected.

Other OpenSSL libraries are also being looked at as well. The libraries found not up to date will also receive patches.

Any further questions…… we will address to further alleviate those concerns

The Digi Security Vulnerability submission process has changed

CVE-2022-22963 and CVE-2022-22965 Do Not Impact Digi Branded Products

Digi Passport Firmware Update

Spring4Shell Vulnerability (CVE-2022-22963)

OpenSSL infinite loop in BN_mod_sqrt() (CVE-2022-0778)

We have identified that the following four of our products have vulnerable versions related to log4j vulnerabilities CVE-2021-44228, and CVE-2021-45046

Note that these products are not vulnerable to the latest log4j vulnerability cited on CVE-2021-45105, and the latest installers below bring log4j up to 2.16. We have provided the direct links that patch the mentioned CVE's next to each product below.

Smart IOmux: Smart IOmux

Digi XCTU: XCTU

Digi XBee Multi Programmer: XBee Multi Programmer

Digi XBee Network Assistant: Digi XBee Network Assistant

We believe these vulnerabilities did not impose direct exploitation in our products because they are desktop applications run by individual users, and they are not accessible through the Internet or used through web services. The four products above are all of the affected products that we know of at this time. In the event we discover any further issues, we will update this page. For more information related to unaffected products, please review the post below dated December 14, 2021.

After a detailed investigation, Digi has determined Apache Log4j CVE-2021-44228 does not impact many of our products/product families. The unaffected products are listed below.

If you do not find a product, please note that we are continuing internal testing and will update the list below as soon as the results are known.

Devices not impacted by Apache Log4j CVE-2021:

• CTEK G6200 family
• CTEK SkyCloud
• CTEK Z45 family
• Digi 54xx family
• Digi 63xx family
• Digi AnywhereUSB (G2) family
• Digi AnywhereUSB Plus family
• Digi Connect family
• Digi Connect EZ family
• Digi Connect IT family
• Digi ConnectPort family
• Digi ConnectPort LTS family
• Digi Connect Sensor family
• Digi Connect WS family
• Digi Embedded Android
• Digi Embedded Yocto
• Digi EX routers
• Digi IX routers
• Digi LR54
• Digi One family
• Digi Passport family
• Digi PortServer TS family
• Digi Rabbit Embedded Family
• Digi TX routers
• Digi WR11
• Digi WR21
• Digi WR31
• Digi WR44R/RR
• Digi WR54
• Digi WR64

Software/Management Platforms:

• AnywhereUSB Manager
• Aview
• ARMT
• AVWOB
• Digi Navigator
• Digi Remote Manager
• Digi Xbee mobile app
• Dynamic C
• Lighthouse
• Realport
• Remote Hub Config Utility

Apache Log4j CVE-2021-44228 vulnerability

FragAttacks - WiFi Fregmentation and Aggregation Attacks

At this time, Digi is still reviewing these attacks and how they impact our devices. From the nature of the attacks, we do expect that Digi devices will be impacted.

However, it is critical to note that even with these attacks, it has always been DIgi's policy and suggestions that network communication should never rely on the protections and standards of the data layers (WiFi/BlueTooth). Many of these are implemented in HW and can be difficult to change. If good network practices are used, (TLS/Certificates etc), then these vulnerabilities do not lead to any real impact. These vulnerabilites can only become impactful IF other flaws or issues are present.

It is Digi's intent to address these issues so that we preserve our defense in depth strategy to security in our products. Due to the complexity of these issues, we believe we will be able to address these by Q4 of 2021 or sooner if possible.

AMNESIA:33 - VU#815128 - Multiple TCP/IP stacks used in Internet of Things (IoT have several vulnerabilities stemming from improper memory management.

RIPPLE20 - Multiple vulnerabilities in TRECK TCP/IP embedded software - VU#257161

• Digi Connect® ME, Digi Connect® EM, Digi Connect® WME, Digi Connect® SP, and Digi Connect® ES; Digi Connect® 9C, Digi Connect® 9P;
• Digi ConnectPort® TS, Digi ConnectPort® X2, Digi ConnectPort® X4;
• Digi AnywhereUSB® (First and Second Gen, NOT Plus);
• NetSilicon 7250, 9210, 9215, 9360, 9750;
• Any products using the NET+OS 7.X development environments.

Reflection attack WR11,WR21,WR31,WR41,WR44 series routers - VU#636397 - CVE-2020-10136

A high level vulnerability (CVSS => 7.0) was discovered on the Digi WR11,WR21,WR31,WR41, and WR44 cellular routers. The attack allows IP-in-IP encapsulation to be used to route arbitrary network traffic through a vulnerable device.

Please download firmware V8.1.0.1 (or greater) for a fix for this issue. Alternatively, enabling the firewall feature on the devices WAN interface (or cellular interface) port will also mitigate this attack.

For more information on this vulnerability, please see the knowledge base article within the Digi support section

Randomization of Secure Session SRP ephemeral values

A vulnerability was discovered on Digi XBee 3 Zigbee and Digi XBee 3 802.15.4 firmwares where the ephemeral values used for Secure Session SRP authentication are not randomized unless BLE is enabled. This feature is typically used to secure networks against unauthorized remote configuration.

For more information, go to: https://www.digi.com/support/knowledge-base/xbee-3-%E2%80%93-secure-session-srp-randomization

Zigbee transport keys sent 'in the clear'

A vulnerability was discovered on earlier generation XBee ZigBee modules (S2B, S2C, and S2D) where a router that was previously associated with the network can be allowed back onto the secured network using an invalid preconfigured link key. After which, this node could inadvertently pass the network key "in the clear" to devices attempting to join through it.

For more information, go to: https://www.digi.com/support/knowledge-base/xbee-zigbee-keys-can-be-sent-in-the-clear

Digi ConnectPort LTS vulnerabilities - 1 unrestricted upload, and 3 stored cross site scripting vulnerabilities - ICS Advisory (ICSA-20-042-13)

Vulnerability researchers Murat Aydemir, and Fatih Kayran discovered the above vulnerabilities within the ConnectPort LTS web interface of  the Digi ConnectPort LTS firmware. The suggested fix for these issues include an update of firmware to the latest release for your product. For the full US-CERT guidance, please see: https://www.us-cert.gov/ics/advisories/icsa-20-042-13

For firmware updates, go to: https://www.digi.com/support/supporttype?type=firmware

"SACK" Vulnerability - (CVE-2019-11477, CVE-2019-11478, CVE-2019-5599 and CVE-2019-11479)

Digi LR54/WR64/WR54 CVE-2018-20162 Major Security Vulnerability – Restricted Shell escape

libSSH Critical vulnerability : CVE-2018-10933

Spectre and Meltdown Vulnerabilities - (CVE-2017-5715, CVE-2017-5753, and CVE-2017-5754)

Digi is aware of the Spectre and Meltdown vulnerabilities that were recently released. These vulnerabilities impact the confidentiality of data running on Intel, AMD and ARM processors.

For Digi hardware products, we do not use Intel or AMD processors, and as a consequence the "Meltdown" vulnerability does not affect Digi hardware products.

For the Spectre vulnerability, Digi security teams are working to determine the practical impacts and patches on Digi hardware products that use ARM processors.

For Digi Remote Manager & Device Cloud, we are working with our providers to address Spectre and Meltdown.

Additional information will be provided as soon as it is available. For more information on these vulnerabilities, please see the website https://meltdownattack.com/

Please continue to check this space for updates, or subscribe to the RSS feed above.

Discovered vulnerabilities with TransPort WR Series cellular routers

Three vulnerabilities have been found by Kasperski Labs within the WR series transport routers. These vulnerabilities are rated from high to low. The impacted devices are the Digi TransPort WR11,WR21,WR41,WR44, and the WR31. This includes "R", and "RR" versions as well. Impacted vulnerable services are SNMP, FTP, and the command line interface. For more information on the discovered vulnerabilities, including patches, mitigations, and overall risk, please see the knowledge base article.

Blueborne Vulnerability

DNSmasq Network service (CVE-2017-14491)

We have evaluated the impact of this vulnerability on our devices, and have concluded that the Transport LR54 is the only Digi device effected. We have made available a patch for this vulnerability in firmware versions 3.1.0.4 and above. Please see the Digi support site for firmware releases for the LR54 product.

KRACK Attack

Mirai Botnet Impact Investigations

Practical exploits to SHA1 hashing has now been discovered

OpenSSL - New Security Release 1.1.0c

Dirty COW - (CVE-2016-5195)