Infinite loop in GoAhead - CVE-2019-5097

Vulnerability identifier: #VU23340

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-5097

CWE-ID: CWE-835

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop in the processing of multi-part/form-data requests in the base GoAhead web server application. A remote attacker can send a specially crafted HTTP request, consume all available system resources and cause denial of service conditions.

GoAhead
1732E-IF4M12R/A
1756-EN2TSC/B
5069-AEN2TR
1747-AENTR
1732E-IB8M8SOER
1732E-OB8M8SR/A
1732E-8IOLM12R
1732E-OF4M12R/A
1732E-8CFGM8R/A
1732E-IR4IM12R/A
1732E-IT4IM12R/A
1756-EN2TR/C
1756-HIST1G/A
1756-HIST2G/A
1769-AENTR
1756-HIST2G/B
1756-EN2T/D
Compact GuardLogix 5380
CompactLogix 5380
GuardLogix 5580
ControlLogix 5580
1756-EN2TP/A
1756-EN2F/C
1765 – EN3TR/B
1756- EN2T/D
CompactLogix 5480

Install updates from vendor's website.

GoAhead - update to 5.1.0
Compact GuardLogix 5380 - update to 32.016
CompactLogix 5380 - update to 32.016
GuardLogix 5580 - update to 32.016
ControlLogix 5580 - update to 32.016
1756-EN2TP/A - update to 11.002
1756-EN2F/C - update to 11.002
1756-EN2TR/C - update to 11.002
CompactLogix 5480 - update to 32.016
1756-HIST1G/A - addressed in versions B 5.104, C 7.100
1756-HIST2G/A - addressed in versions B 5.104, C 7.100
1769-AENTR - update to 1.003
1756-HIST2G/B - update to 5.104
1756-EN2T/D - update to 11.002

• https://www.talosintelligence.com/vulnerability_reports/TALOS-2019-0889

• Multiple vulnerabilities in EmbedThis GoAhead
• Multiple vulnerabilities in Rockwell Automation products using GoAhead Web Server
• Infinite loop in Rockwell Automation products using GoAhead Web Server