Nightmare Eclipse Drops 'HardBreacher' Kaspersky Product Exploit Nightmare Eclipse 发布针对 Kaspersky 产品的 HardBreacher 漏洞利用

TL;DR

• Researcher Nightmare Eclipse (aka Chaotic Eclipse) released a privilege escalation exploit called HardBreacher targeting Kaspersky Endpoint Security
• The PoC demonstrates that compromising Kaspersky's UI process can cause the product to malfunction, grant/block unauthorized file access, and destabilize the entire OS
• Kaspersky confirmed the underlying vulnerability has been patched and delivered via automatic update
• This is part of a pattern of the researcher publicly releasing zero-days after frustration with Microsoft's vulnerability handling
• Previous exploits from the same researcher include ShieldBreak (System shell) and LegacyHive (privilege escalation)

Why It Matters

This incident highlights the growing trend of independent security researchers publicly disclosing zero-day exploits when they feel vendors are not adequately addressing vulnerabilities, creating direct risk for organizations relying on endpoint security products. It also underscores a critical paradox: a security tool itself can become a high-value attack vector, and compromising its UI process can neutralize the very protections it provides.

Technical Details

• HardBreacher is a proof-of-concept privilege escalation exploit targeting Kaspersky Endpoint Security by taking control of the product's UI process
• The researcher described the PoC as poorly structured ("duct taped") but functional, demonstrating that UI process compromise leads to loss of access control enforcement
• Kaspersky confirmed the fix was delivered through an automatic update or manual database update
• Previous exploits from the same researcher: ShieldBreak (spawns System-privilege shell) and LegacyHive (enables privilege escalation)
• The researcher's motivation stems from frustration with Microsoft's handling of vulnerability reports, leading to a pattern of public PoC releases

Industry Insight

• Organizations should treat endpoint security products as part of their attack surface and ensure they are kept up to date, as vulnerabilities in these tools can effectively disable security controls
• The "full disclosure" trend by disgruntled researchers poses an ongoing risk; vendors must prioritize timely patching and transparent communication to discourage public exploit releases
• Security teams should monitor for PoC availability of vulnerabilities in their endpoint protection software, as even unrefined exploits can be weaponized by threat actors in the wild

TL;DR

• 研究人员Nightmare Eclipse发布针对Kaspersky Endpoint Security的特权提升漏洞利用程序HardBreacher
• 该漏洞允许攻击者通过控制UI进程实现系统级权限提升，导致Kaspersky防护功能完全失效
• Kaspersky已确认漏洞并通过自动更新修复
• 该研究员此前已多次发布针对Windows和Microsoft Defender的漏洞利用程序

为什么值得看

安全软件本身的安全漏洞可能成为攻击者的突破口，这对依赖单一安全产品的企业构成潜在风险。文章揭示了安全厂商自身产品可能存在的攻击面，提醒行业关注防护软件的供应链安全。

技术解析

HardBreacher利用Kaspersky Endpoint Security中的特权提升漏洞，通过劫持UI进程实现权限提升。攻击者可以导致Kaspersky停止运行、非法控制文件访问权限，使整个操作系统处于危险状态。该PoC代码质量较低，但功能已实现。

行业启示

安全软件供应商需加强自身产品的安全审计和漏洞响应机制，避免成为攻击跳板。企业应建立多层安全防护策略，不依赖单一安全产品。安全研究人员应通过负责任披露渠道报告漏洞，避免PoC被恶意利用。