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Week in review: Clever Office 365 phishing, 2021 CWE Top 25, Patch Tuesday forecast

Vulnerabilities mentionedAll →

CVEVulnerabilityCVSSEPSSFlagsAffectedExposurePublished
CVE-2020-8260
Authenticated RCE in Ivanti Pulse Connect Secure admin web interface (pre-9.1R9)

Ivanti Pulse Connect Secure versions before 9.1R9 contain a vulnerability (mapped to CWE-434) in the administrative web interface in which compressed uploads are handled with uncontrolled gzip extraction. An authenticated attacker with high-privilege (admin-level) access to that interface can send a crafted gzip-compressed file, triggering arbitrary code execution on the appliance with high impact to confidentiality, integrity, and availability (CVSS 3.1: 7.2, AV:N/PR:H). Successful exploitation yields arbitrary code execution on the VPN appliance itself, effectively enabling full compromise of the gateway that terminates the organization's VPN sessions. Any organization running Pulse Connect Secure on a release prior to 9.1R9 is affected, making the typical target an enterprise or government SSL VPN appliance accessible to anyone holding admin credentials. Exploitation is in the wild: the flaw is in CISA's Known Exploited Vulnerabilities catalog (added 2021-11-03), carries a 96.5% EPSS exploitation probability (100th percentile), and a public proof of concept is available.

Do: Upgrade Pulse Connect Secure to 9.1R9 or later per the vendor's instructions; given the related patch-bypass flaw CVE-2021-22937 and the 'new urgent update' headlines, ensure the most recent available 9.1R release is applied rather than relying solely on the original 9.1R9 fix. Restrict the admin web interface to trusted management networks and review administrative accounts. Because the flaw is on CISA's KEV list and CISA has published malware analysis reports for Pulse Secure-targeted samples, hunt patched and unpatched devices for signs of compromise (e.g., web shells or implants).

7.296% KEV PoC
  • ivanti connect secure all releases prior to 9.1R9 (< 9.1R9)
mass≈10^5 devices: a six-figure installed base of Pulse Connect Secure appliances, with tens of thousands internet-exposed in public scans at the time of the 2021…
CVE-2021-22937
A vulnerability in Pulse Connect Secure before 9.1R12 could allow an authenticated administrator to perform a file write via a maliciously crafted archive uploa

A vulnerability in Pulse Connect Secure before 9.1R12 could allow an authenticated administrator to perform a file write via a maliciously crafted archive uploaded in the administrator web interface.

NVD description · AI analysis pending
7.28%
  • ivanti connect secure
  • ivanti pulse connect secure
CVE-2021-34527
PrintNightmare: Remote Code Execution in Microsoft Windows Print Spooler

CVE-2021-34527, widely known as 'PrintNightmare', is a remote code execution flaw in the Microsoft Windows Print Spooler service, which improperly performs privileged file operations such as loading printer driver DLLs. An attacker with low-level access who can reach a machine's spooler, for example a domain user able to add a printer connection via Point and Print, can induce the SYSTEM-privileged service to load an attacker-controlled DLL with no user interaction required (CVSS:3.1 vector AV:N/AC:L/PR:L/UI:N). Successful exploitation yields arbitrary code execution as SYSTEM, letting the attacker install programs, view, change or delete data, and create new accounts with full user rights, effectively achieving complete host compromise. The flaw affects all supported Windows client and server releases in the CISA data, Windows 10 from 1507 through 22H2, Windows 11, Windows RT 8.1, and Windows Server 2008, 2012 and 2016, wherever the Print Spooler service is running. Exploitation is confirmed in the wild: the bug was added to CISA's Known Exploited Vulnerabilities catalog on 2021-11-03 with known ransomware use, the FBI and CISA have warned of Russian actors exploiting it, and EPSS places the 30-day exploitation probability at 99.8%.

Do: Install the July 2021 security updates immediately, released July 6, 2021 with additional updates on July 7 for Windows Server 2012, Windows Server 2016 and Windows 10 version 1607, and review KB5005010 for restricting installation of new printer drivers after applying the July 6 updates. Where patching is delayed, disable the Print Spooler service on hosts that do not need printing or restrict Point and Print, and verify that NoWarningNoElevationOnInstall and UpdatePromptSettings under HKLM\SOFTWARE\Policies\Microsoft\Windows NT\Printers\PointAndPrint are set to 0 or not defined (these keys do not exist by default, which is the secure state; NoWarningNoElevationOnInstall = 1 makes the system vulnerable by design). Prioritize domain controllers and servers with exposed spoolers, and hunt…

8.8100% KEV ransomware PoC ×3
  • microsoft Windows 10 1507, 1607, 1809, 20H2, 21H2, 22H2
  • microsoft Windows 11 21H2, 22H2
  • microsoft Windows RT 8.1 8.1
  • +3 more
masshundreds of millions of Windows systems (order of magnitude 10^8)
Full article1,465 words · extracted from helpnetsecurity.com · click to collapse

Here’s an overview of some of last week’s most interesting news, articles and podcasts:

Patch bypass flaw in Pulse Secure VPNs can lead to total compromise (CVE-2021-22937)
The patch for a vulnerability (CVE-2020-8260) in Pulse Connect Secure VPN devices that attackers have been exploiting in the wild can be bypassed, security researcher Rich Warren has found.

A clever phishing campaign is targeting Office 365 users
Microsoft is warning about an ongoing, “sneakier than usual” phishing campaign aimed at Office 365 users.

August 2021 Patch Tuesday forecast: Dealing with emergency patching
The PrintNightmare print spooler vulnerability, CVE-2021-34527, caused a lot of excitement last month. If you’re still in an active patch cycle, ensure you install the latest cumulative (or monthly rollup) to address this vulnerability.

Vulnerable TCP/IP stack is used by almost 200 device vendors
Researchers have discovered 14 new vulnerabilities affecting the proprietary NicheStack (aka InterNiche) TCP/IP stack, used in OT devices such as the extremely popular Siemens S7 PLCs.

A look at the 2021 CWE Top 25 most dangerous software weaknesses
The 2021 Common Weakness Enumeration (CWE) Top 25 Most Dangerous Software Weaknesses is a demonstrative list of the most common issues experienced over the previous two calendar years.

Critical vulnerabilities may allow attackers to compromise hospitals’ pneumatic tube system
Armis researchers have unearthed critical vulnerabilities in Swisslog Healthcare’s Translogic pneumatic tube system, which plays a crucial role in patient care in more than 3,000 hospitals worldwide (including 80% of hospitals in North America).

SAP applications more vulnerable than users might think
Many application owners are unaware of how vulnerable their SAP applications may be, significantly increasing the risks to their core enterprise systems. This is the overall conclusion of a Turnkey Consulting and Onapsis report.

A digital shift requires a new approach to asset management: How to reduce security risks
The global pandemic forced organizations to rapidly accelerate their digital transformation. As a result, nearly overnight, companies spanning all sizes and sectors deployed technologies like cloud and containers to support the shift to IoT and address the remote workforce.

What is DataSecOps and why it matters
In this Help Net Security podcast, Ben Herzberg, Chief Scientist at Satori, explains what DataSecOps is, and illustrates its significance.

AWS S3 can be a security risk for your business
As the use of AWS’ Amazon Simple Storage Service (S3) increased, so have the content types that are stored and shared on it. AWS S3 buckets are now exposed via additional channels and APIs, which create new security blind spots that hackers are waiting to exploit.

CISA launches US federal vulnerability disclosure platform
Bug hunters who want to help the US federal government secure their online assets can now source all the relevant information from a vulnerability disclosure policy (VDP) platform offered by the Cybersecurity and Infrastructure Security Agency (CISA).

Ransom demands reaching $1.2M, smaller companies increasingly targeted
Ransom demands have grown substantially over the past year, smaller companies are increasingly targeted, and cyber criminals continue to take advantage of dislocations in how we work, according to a Coalition report.

Ransomware attacks skyrocketed in H1 2021
In the first half (H1) of 2021, ransomware attacks skyrocketed, eclipsing the entire volume for 2020 in only six months, according to the mid-year update to the SonicWall report. In a new paradigm for cybercrime, SonicWall is analyzing how threat actors are using any means possible to further their malicious intents.

Cybercriminals are manipulating reality to reshape the modern threat landscape
VMware released a report which analyzes how cybercriminals are manipulating reality to reshape the modern threat landscape. The report found a drastic rise in destructive attacks, where adversaries deploy advanced techniques to deliver more targeted, sophisticated attacks that distort digital reality, be it via business communications compromise (BCC) or the manipulation of time.

How real-time computing can sound the kill chain alarm
With the increasing number of large-scale attacks, organizations across all industries, and especially those that meet critical needs, must become better prepared.

92% of pharmaceutical companies have at least one exposed database
Reposify released its Pharmaceutical Industry Attack Surface Exposures Report examining the security posture of the world’s leading pharmaceutical companies.

Demystifying cybersecurity with a more human-centric approach
Regardless of the size of the business, the reality is that cybersecurity is not just the domain of security professionals or its executives. Every single employee within a company has a hand in the protection of the business, as they handle company data, manipulate it, and communicate it as part of their jobs.

Review: Group-IB Digital Risk Protection
In this review, we will analyze Group-IB Digital Risk Protection, an Al-driven product that helps detect the exposure of your digital assets and protect them from misuse.

Gamification can redefine the cybersecurity demo experience
Lead generation is the easy part of the sales cycle. Marketing activities, sales enablement tools, events, and so on should create the perfect environment that allows sales teams to fill their sales funnel (if they are doing their job effectively). But while it may be possible to generate 200+ qualified enterprise leads in any given quarter, it is frequently the “last mile” in selling that can feel like an uphill journey.

How to build a zero-trust cloud data architecture
Cloud computing has had a profound impact on CISOs. They realize its cheap storage, immense scalability, resource elasticity and accessibility from anywhere in the world, at any time, has created a competitive advantage for the companies whose data they’re in charge of protecting. But these same factors, especially its accessibility, make their jobs infinitely more difficult.

With Crime-as-a-Service, anyone can be an attacker
For hackers, phishing is one of the easiest ways to steal your organization’s data. Traditionally, executing a successful phishing campaign required a seasoned cybercriminal with technical expertise and knowledge of social engineering. However, with the emergence of CaaS, just about anyone can become a master of phishing for a small fee.

Organizations still rely on weak security for remote workers
A new survey of enterprise IT security leaders showed almost 80 percent believe remote workers are at more risk for phishing attacks now because they’re isolated from their organizations’ security teams.

Supply chain attacks expected to multiply by 4 in 2021
Supply chain attacks have been a concern for cybersecurity experts for many years because the chain reaction triggered by one attack on a single supplier can compromise a network of providers. Malware is the attack technique that attackers resort to in 62% of attacks.

The destructive power of supply chain attacks and how to secure your code
In this Help Net Security podcast, Tomislav Peričin, Chief Software Architect at ReversingLabs, explains the latest and most destructive supply chain attacks, their techniques and how to build more secure apps.

The importance of compute lifecycle assurance in a zero-trust world
With the proliferation of attack surfaces in IoT, the increase in firmware-based attacks on hardware, and growing threats to systems throughout their lifecycle, companies are beginning to embrace the new model of zero trust for systems.

RIP guest access, long live shared channels!
While many yearn to return to pre-pandemic days, some aspects of our new normal are welcome. Most notable is the flexibility of hybrid working, with a great majority of employers reporting they will embrace greater flexibility post-pandemic, by deploying a hybrid onsite / remote work model.

Collaboration is key for cloud innovation
Developers and security professionals work in very different ways. While the former is likely to move and innovate fast – with quick coding and rapid application building a top priority – security teams will often take a more considered approach to ensure costly breaches are avoided and attack surfaces are reduced.

Blocked DDoS attack volumes up, tech, healthcare and finance most targeted
Second quarter blocked DDoS attack volumes were up more than 40% compared to the same period in 2020, a Radware report reveals. The report provides an overview of DDoS attack trends by industry, as well as across applications and attack types.

Can the public cloud become confidential?
It’s been often said that the only two certain things in life are death and taxes. Over the past ten years, it seems data breaches can be added to this list. Can an organization really be completely safe – without fear of losing confidential or regulated data, company secrets, and (increasingly) proprietary algorithms and AI code?

Are you ready for the CISSP exam?
Find out with the Official (ISC)² CISSP Flash Cards. Study for the CISSP exam anytime, anywhere using this FREE interactive self-study tool that tests knowledge across all eight CISSP domains and gives you immediate feedback to reinforce learning.

New infosec products of the week: August 6, 2021
Here’s a look at the most interesting product releases from the past week, featuring releases from McAfee, AppOmni, Satori, SentinelOne, and Optiv Security.

Text extracted automatically; images, tables and formatting may be missing. Original: https://www.helpnetsecurity.com/2021/08/08/week-in-review-clever-office-365-phishing-2021-cwe-top-25-patch-tuesday-forecast/