A high-severity flaw impacting choose 4-Religion routers has come beneath lively exploitation within the wild, in response to new findings from VulnCheck.
The vulnerability, tracked as CVE-2024-12856 (CVSS rating: 7.2), has been described as an working system (OS) command injection bug affecting router fashions F3x24 and F3x36.
The severity of the shortcoming is decrease as a result of the truth that it solely works if the distant attacker is ready to efficiently authenticate themselves. Nevertheless, if the default credentials related to the routers haven’t been modified, it might end in unauthenticated OS command execution.
Within the assault detailed by VulnCheck, the unknown menace actors have been discovered to leverage the router’s default credentials to set off exploitation of CVE-2024-12856 and launch a reverse shell for persistent distant entry.
The exploitation try originated from the IP handle 178.215.238[.]91, which has been beforehand utilized in reference to assaults looking for to weaponize CVE-2019-12168, one other distant code execution flaw affecting 4-Religion routers. In line with menace intelligence agency GreyNoise, efforts to use CVE-2019-12168 have been recorded as just lately as December 19, 2024.
“The assault may be performed in opposition to, no less than, the 4-Religion F3x24 and F3x36 over HTTP utilizing the /apply.cgi endpoint,” Jacob Baines mentioned in a report. “The techniques are susceptible to OS command injection within the adj_time_year parameter when modifying the system’s system time through submit_type=adjust_sys_time.”
Information from Censys exhibits that there are over 15,000 internet-facing gadgets. There’s some proof suggesting that assaults exploiting the flaw could have been ongoing since no less than early November 2024.
There’s presently no details about the provision of patches, though VulnCheck acknowledged that it responsibly reported the flaw to the Chinese language firm on December 20, 2024. The Hacker Information has reached out to 4-Religion for remark previous to the publication of this story and can replace the piece if we hear again.