CVE-2019-7257
published 2019-07-02CVE-2019-7257: Linear eMerge E3-Series devices allow Unrestricted File Upload.
PriorityP183critical10CVSS 3.1
AVNACLPRNUINSCCHIHAH
EXPLOIT
EPSS
69.99%
99.3th percentile
Linear eMerge E3-Series devices allow Unrestricted File Upload.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| nortekcontrol | linear_emerge_elite_firmware | <= 1.00-06 | — |
| nortekcontrol | linear_emerge_essential_firmware | <= 1.00-06 | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Detect multipart POST requests to /badging/badge_layout_new_v0.php containing a filename field with a .php extension — this is the upload vector for the webshell. ↗
- →Alert on HTTP GET requests to /badging/bg/*.php?cmd= — this pattern indicates webshell command execution following a successful upload. ↗
- →The exploit uses the distinctive User-Agent string 'Brozilla/16.0'; flag HTTP requests to eMerge E3 devices bearing this User-Agent. ↗
- →The uploaded webshell is placed at the predictable path /spider/web/webroot/badging/bg/webshell.php on the device filesystem; file-integrity monitoring on this path can confirm compromise. ↗
- →The process running the webshell is lighttpd (uid=1003) with gid=0(root); anomalous lighttpd child processes executing system commands are a strong post-exploitation indicator. ↗
- ·The exploit targets firmware version 1.00-06 specifically; the upload endpoint and webshell drop path may differ on other firmware versions. ↗
- ·The multipart boundary used by the PoC is a fixed string '----j'; real-world attackers may vary this boundary, so detection rules should not rely solely on boundary matching. ↗
CVSS provenance
nvdv3.110.0CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
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CISA ICS
Nice Linear eMerge E3-Series
cisa_ics·2024-03-05·CVSS 9.8
[CRITICAL] Nice Linear eMerge E3-Series
ICS Advisory
##
Nice Linear eMerge E3-Series
Release DateMarch 05, 2024
Alert CodeICSA-24-065-01
View CSAF
## 1. EXECUTIVE SUMMARY
- CVSS v3 10.0
- ATTENTION: Exploitable remotely/low attack complexity/public exploits are available
- Vendor: Nice
- Equipment: Linear eMerge E3-Series
- Vulnerabilities: Path traversal, Cross-site scripting, OS command injection, Unrestricted Upload of File with Dangerous Type, Incorrect Authorization, Exposure of Sensitive Information to an Authorized Actor, Insufficiently Protected Credentials, Use of Hard-coded Credentials, Cross-site Request Forgery, Out-of-bounds Write
## 2. RISK EVALUATION
Successful exploitation of these vulnerabilities could allow a remote attacker to gain full system access.
## 3. TECHNICAL DETAILS
GHSA
GHSA-gfxc-m887-jprx: Linear eMerge E3-Series devices allow Unrestricted File Upload
ghsa_unreviewed·2022-05-24
CVE-2019-7257 [CRITICAL] CWE-434 GHSA-gfxc-m887-jprx: Linear eMerge E3-Series devices allow Unrestricted File Upload
Linear eMerge E3-Series devices allow Unrestricted File Upload.
No detection rules found.
No writeups or analysis indexed.
http://packetstormsecurity.com/files/155254/Linear-eMerge-E3-1.00-06-Arbitrary-File-Upload-Remote-Root-Code-Execution.htmlhttps://applied-risk.com/labs/advisorieshttps://www.applied-risk.com/resources/ar-2019-005http://packetstormsecurity.com/files/155254/Linear-eMerge-E3-1.00-06-Arbitrary-File-Upload-Remote-Root-Code-Execution.htmlhttps://applied-risk.com/labs/advisorieshttps://www.applied-risk.com/resources/ar-2019-005
2019-07-02
Published