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Information about the third critical vulnerability in Netgear switches has Information about the third critical vulnerability in Netgear switches has


Information about the third critical vulnerability in Netgear switches has been published



Exploitation allows you to execute malicious code and gain control over vulnerable devices.

A Polish cybersecurity researcher using the alias Gynvael Coldwind has posted new details on a recently fixed critical vulnerability in Netgear smart switches. The problem could be exploited by an attacker to execute malicious code and gain control over vulnerable devices.

A vulnerability called Seventh Inferno received a score of 9.8 out of a maximum 10 on the CVSS scale and is one of three critical issues found by a Polish information security expert in Netgear switches. Recall that earlier the researcher published technical details (as well as PoC codes) of the problems Demon’s Cries and Draconian Fear

Successful use of Demon’s Cries and Draconian Fear could provide an attacker with the ability to change the administrator password without actually knowing the previous password, or to intercept session boot information, resulting in a complete compromise of the device.

Seventh Inferno is related to a newline injection error in the password field during web interface authentication, which allows an attacker to create bogus session files and combine this with Denial of Service (DoS) on reboot and shell injection after authentication to execute any code with superuser privileges.

DoS on reboot is a method designed to reboot the switch by using a newline for the entry “2” in three different kernel configurations (“/ proc / sys / vm / panic_on_oom”, “/ proc / sys / kernel / panic” and “/ proc / sys / kernel / panic_on_oops “) in such a way that the device is forced to shutdown and restart due to kernel panic when all available RAM is consumed when downloading a large file over HTTP.

Vulnerabilities affect the following device models:

  • GC108P;

  • GC108PP;

  • GS108Tv3;

  • GS110TPP;

  • GS110TPv3;

  • GS110TUP;

  • GS308T;

  • GS310TP;

  • GS710TUP;

  • GS716TP;

  • GS716TPP;

  • GS724TPP;

  • GS724TPv2;

  • GS728TPPv2;

  • GS728TPv2;

  • GS750E;

  • GS752TPP;

  • GS752TPv2;

  • MS510TXM;

  • MS510TXUP.

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