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fortinet

Customers are urged by Fortinet to address actively exploited FortiOS SSL-VPN flaw

Posted on 12 December 202212 December 2022 By RiSec.Mitch No Comments on Customers are urged by Fortinet to address actively exploited FortiOS SSL-VPN flaw

An actively exploited FortiOS SSL-VPN weakness that would have allowed a remote, unauthenticated attacker to run arbitrary code on devices been addressed by Fortinet

In order to address an actively exploited FortiOS SSL-VPN vulnerability, identified as CVE-2022-42475, which might be used by an unauthenticated, remote attacker to execute arbitrary code on devices, Fortinet recommends users to update their setups.

The CVE-2022-42475 flaw is a heap-based buffer overflow issue that resides in FortiOS sslvpnd.

“A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.” reads the advisory published by the security vendor. “Fortinet is aware of an instance where this vulnerability was exploited in the wild,”

Fortinet recommends its customers of checking the following indicators of compromise >>

Multiple log entries with:


Logdesc="Application crashed" and msg="[...] application:sslvpnd,[...], Signal 11 received, Backtrace: [...]“

Presence of the following artifacts in the filesystem:

/data/lib/libips.bak
/data/lib/libgif.so
/data/lib/libiptcp.so
/data/lib/libipudp.so
/data/lib/libjepg.so
/var/.sslvpnconfigbk
/data/etc/wxd.conf
/flash

Connections to suspicious IP addresses from the FortiGate:

188.34.130.40:444
103.131.189.143:30080,30081,30443,20443
192.36.119.61:8443,444
172.247.168.153:8033

The vulnerability was first disclosed by cybersecurity firm Olympe Cyberdefense

Below is the list of affected products:

  • FortiOS version 7.2.0 through 7.2.2
  • FortiOS version 7.0.0 through 7.0.8
  • FortiOS version 6.4.0 through 6.4.10
  • FortiOS version 6.2.0 through 6.2.11
  • FortiOS-6K7K version 7.0.0 through 7.0.7
  • FortiOS-6K7K version 6.4.0 through 6.4.9
  • FortiOS-6K7K version 6.2.0 through 6.2.11
  • FortiOS-6K7K version 6.0.0 through 6.0.14

Fortinet addressed the issue with the release of FortiOS 7.2.3.

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RiSec.Mitch
Just your average information security researcher from Delaware US.
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Recommended:  White House: Arrested Russian hacker was behind Colonial Pipeline attack
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InfoSec News, Trending, Vulnerabilities Tags:CVE-2022-42475, Fortinet, FortiOS, SSl

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