Tag Archive for: flaws

Governments issue alerts after ‘sophisticated’ state-backed actor found exploiting flaws in Cisco security boxes • The Register

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A previously unknown and “sophisticated” nation-state group compromised Cisco firewalls as early as November 2023 for espionage purposes — and possibly attacked network devices made by other vendors including Microsoft, according to warnings from the networking giant and three Western governments.

These cyber-spy campaigns, dubbed “ArcaneDoor” by Cisco, were first spotted in early January and revealed on Wednesday. And they targeted VPN services used by governments and critical infrastructure networks around the globe, according to a joint advisory issued by the Canadian Centre for Cyber Security (Cyber Centre), the Australian Signals Directorate’s Cyber Security Centre, and the UK’s National Cyber Security Centre (NCSC).

A Cisco spokesperson declined to comment on which country the snooping crew – tracked as UAT4356 by Talos and as STORM-1849 by Microsoft – is affiliated with. The disclosures, however, come as both Russian and China-backed hacking groups have been found burrowing into critical infrastructure systems and government agencies, with China specifically targeting Cisco gear.

The mysterious nation-state group “utilized bespoke tooling that demonstrated a clear focus on espionage and an in-depth knowledge of the devices that they targeted, hallmarks of a sophisticated state-sponsored actor,” according to a Talos report published today.

The attacks exploit two vulnerabilities, CVE-2024-20353 and CVE-2024-20359, in Cisco Adaptive Security Appliance (ASA) and Firepower Threat Defense (FTD) devices, and the networking giant issued fixes for both on Wednesday, plus a fix for a related flaw.

CVE-2024-20353 is a high-severity vulnerability in the management and VPN web servers for Cisco ASA and FTD devices, and could allow an unauthenticated, remote attacker to cause the machines to reload unexpectedly, resulting in a denial of service (DoS) attack. It received an 8.6 CVSS rating.

Two other flaws, CVE-2024-20359 and CVE-2024-20358 received a 6.0 CVSS score, and could allow an authenticated local attacker to execute arbitrary code with root-level privileges. Exploiting either, however, requires administrator-level privileges.

Cisco says it hasn’t yet…

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Critical D-Link Security Flaws Leaves Thousands Of These Storage Devices Vulnerable To Hacks

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end of life d link nas vulnerability allow code execution

End-of-life hardware can be quite the problem at times, even crashing back into Earth’s atmosphere at supersonic speeds for that matter. Of course, we wouldn’t expect such travesties happening with the hardware you keep in your basement, or that NAS you tucked away your closet. However, older tech gear can have serious security vulnerabilities that might not get patched due to its end-of-life status with the manufacturer. This is precisely what some D-Link networked attached storage (NAS) owners are finding out after a critical vulnerability was discovered, affecting up to 10s of thousands of devices still connected to the internet.

Roughly two weeks ago, researchers discovered a chain of vulnerabilities in several D-Link NAS devices including “DNS-340L, DNS-320L, DNS-327L, and DNS-325, among others.” The issues live with nas_sharing.cgi, which has a backdoor thanks to hardcoded credentials and command injection through the system parameter. These combined would allow for arbitrary code execution on the afflicted devices, allowing an attacker access to information, denial of service, or otherwise.

92k end of life d link nas vulnerability allow code execution

According to the researchers with NetSecFish, up to 92,000 D-Link devices are exposed to the internet and vulnerable to attackers. Shodan shows that there are significantly fewer exposed devices and fewer still that are tagged as end-of-life. Regardless, in response to the vulnerabilities, D-Link posted a notice explaining that the “exploit affects a legacy D-Link products and all hardware revisions, which have reached their End of Life (“EOL”)/End of Service Life (“EOS”) Life-Cycle.” As such, the recommendation for affected systems is to retire or replace them, as there will not be an update coming from the company.

Of course, you can also always ensure that the NAS devices are not exposed to the internet and simply use them internally, but there’s no guarantee that your data is safe. Thus, we would also recommend upgrading your storage server to something more current (16TB Buffalo NAS), to help prevent these types of security issues.

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Critical Flaws Leave 92,000 D-Link NAS Devices Vulnerable to Malware Attacks

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Apr 09, 2024NewsroomBotnet / Vulnerability

D-Link NAS Devices

Threat actors are actively scanning and exploiting a pair of security flaws that are said to affect as many as 92,000 internet-exposed D-Link network-attached storage (NAS) devices.

Tracked as CVE-2024-3272 (CVSS score: 9.8) and CVE-2024-3273 (CVSS score: 7.3), the vulnerabilities impact legacy D-Link products that have reached end-of-life (EoL) status. D-Link, in an advisory, said it does not plan to ship a patch and instead urges customers to replace them.

“The vulnerability lies within the nas_sharing.cgi uri, which is vulnerable due to two main issues: a backdoor facilitated by hard-coded credentials, and a command injection vulnerability via the system parameter,” security researcher who goes by the name netsecfish said in late March 2024.

Cybersecurity

Successful exploitation of the flaws could lead to arbitrary command execution on the affected D-Link NAS devices, granting threat actors the ability to access sensitive information, alter system configurations, or even trigger a denial-of-service (DoS) condition.

The issues affect the following models –

  • DNS-320L
  • DNS-325
  • DNS-327L, and
  • DNS-340L

Threat intelligence firm GreyNoise said it observed attackers attempting to weaponize the flaws to deliver the Mirai botnet malware, thus making it possible to remotely commandeer the D-Link devices.

D-Link NAS Devices

In the absence of a fix, the Shadowserver Foundation is recommending that users either take these devices offline or have remote access to the appliance firewalled to mitigate potential threats.

Cybersecurity

The findings once again illustrate that Mirai botnets are continuously adapting and incorporating new vulnerabilities into their repertoire, with threat actors swiftly developing new variants that are designed to abuse these issues to breach as many devices as possible.

With network devices becoming common targets for financially motivated and nation-state-linked attackers, the development comes as Palo Alto Networks Unit 42 revealed that threat actors are increasingly switching to malware-initiated scanning attacks to flag vulnerabilities in target networks.

“Some scanning attacks originate from benign networks likely driven by malware on infected machines,”…

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For March’s Patch Tuesday, no zero-day flaws

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Microsoft this week pushed out 61 Patch Tuesday updates with no reports of public disclosures or other zero-days affecting the larger ecosystem (Windows, Office, .NET). Though there are three updated packages from February, they’re just informational changes with no further action is required.

The team at Readiness has crafted this helpful infographic outlining the risks associated with each of the March updates.

Known issues

Each month, Microsoft publishes a list of known issues that relate to the operating system and platforms included in the latest update cycle; for March, there are two minor issues reported:

  • Windows devices using more than one monitor might experience issues with desktop icons moving unexpectedly between monitors or see other icon alignment issues when attempting to use Copilot in Windows. Microsoft is still working on the issue.
  • For Exchange Server, Microsoft published an advisory note: after you install the latest security update there is no longer support for the Oracle OutsideIn Technology (OIT) or OutsideInModule. For more information, see this service update.

February was not a great month for how Microsoft communicated updates and revisions. With March being an exceptionally light month for reported “known issues” for desktop and server platforms, our team found no documentation issues. Good job Microsoft!

Major revisions

This month, Microsoft published the following major revisions to past security and feature updates including:

  • CVE-2024-2173, CVE-2024-2174, and CVE-2024-2176: Chromium: CVE-2024-2173 Out of bounds memory access in V8. These updates relate to recent security patches for the Chromium browser project at Microsoft. No further action required.

Mitigations and workarounds

Microsoft released these vulnerability-related mitigations for this month’s release cycle: 

  • CVE-2023-28746 Register File Data Sampling (RFDS). We are not certain how to categorize this update from Intel, as it relates to a hardware issue with certain Intel chipsets. The mitigation for this vulnerability requires a firmware update, and a corresponding Windows update enables this third-party firmware-based mitigation. More information can be…

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