rConfig OS Command Injection Vulnerability

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2021-11-03
• EPSS: 77% chance of exploitation in the next 30 days (higher than 100% of CVEs)

[ Description ]Official description

lib/ajaxHandlers/ajaxAddTemplate.php in rConfig through 3.94 allows remote attackers to execute arbitrary OS commands via shell metacharacters in the fileName POST parameter.

CISA: rConfig lib/ajaxHandlers/ajaxAddTemplate.php contains an OS command injection vulnerability that allows remote attackers to execute OS commands via shell metacharacters in the fileName POST parameter.

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 3 May 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• packetstormsecurity.com/files/156687/rConfig-3.93-Authenticated-Remote-Code-Execution.htmlExploitThird Party AdvisoryVDB Entry
• cwe.mitre.org/data/definitions/78.htmlThird Party Advisory
• engindemirbilek.github.io/rconfig-3.93-rceExploitThird Party Advisory
• github.com/EnginDemirbilek/EnginDemirbilek.github.io/blob/master/rconfig-3.93-rce.htmlExploitThird Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource