Network Security, Vulnerability Management

Researchers disclose six privilege escalation bugs in Shimo VPN client

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The Shimo VPN client for Mac systems contains six privilege escalation vulnerabilities that have yet to be patched by its developers, researchers from Cisco's Talos division reported yesterday.

Shimo is a product that allows users to connect multiple VPN accounts to a single application. Discovered by Cisco Labs researcher Tyler Bohan, all six flaws were found in Shimo VPN client version 4.1.5.1's "helper tool," which Talos says is used to accomplish certain privileged work.

In a blog post, Talos describes five of the vulnerabilities as exploitable, while noting that all six require local access to the machine.Three of them can allow attackers to elevate privileges to root. A fourth can enable a non-root users to kill privileged processes, while another lets attackers delete protected files and yet another can be exploited to execute user-supplied script arguments under root context.

Shimo did not respond to multiple disclosure attempts, according to Talos. SC Media has attempted to reach out to Shimo for comment.

Bradley Barth

As director of multimedia content strategy at CyberRisk Alliance, Bradley Barth develops content for online conferences, webcasts, podcasts video/multimedia projects — often serving as moderator or host. For nearly six years, he wrote and reported for SC Media as deputy editor and, before that, senior reporter. He was previously a program executive with the tech-focused PR firm Voxus. Past journalistic experience includes stints as business editor at Executive Technology, a staff writer at New York Sportscene and a freelance journalist covering travel and entertainment. In his spare time, Bradley also writes screenplays.

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