CVE-2021-42840

EPSS 58.9%

Vexday Risk Score

50Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

Exploit maturity

Functional exploit

Automatable exploit available (Nuclei/Metasploit).

CVSS —EPSS 58.9%KEV nãoPoC públicaNuclei —Metasploit simPatch —

Lifecycle

28 Apr 2021Metasploit module available

22 Oct 2021Published on NVD

17 Nov 2021Public PoC

Weaponization speed

25 daysto first PoC

Recommendation: Plan a near-term fix — a public PoC already exists.

SuiteCRM before 7.11.19 allows remote code execution via the system settings Log File Name setting. In certain circumstances involving admin account takeover, logger_file_name can refer to an attacker-controlled PHP file under the web root, because only the all-lowercase PHP file extensions were blocked. NOTE: this issue exists because of an incomplete fix for CVE-2020-28328.

Affected products

n/a · n/a

public PoCs found — 2

cve_referencepacketstormsecurity.com/files/165001/SuiteCRM-7.11.18-Remote-Code-Execution.htmlunverified exploitdbwww.exploit-db.com/exploits/50531unverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

References

http://packetstormsecurity.com/files/165001/SuiteCRM-7.11.18-Remote-Code-Execution.html https://docs.suitecrm.com/admin/releases/7.11.x/#_7_11_19 https://github.com/rapid7/metasploit-framework/commits/master/modules/exploits/linux/http/suitecrm_log_file_rce.rb https://suitecrm.com/time-to-upgrade-suitecrm-7-11-19-7-10-30-lts-released/https://theyhack.me/SuiteCRM-RCE-2/