PT-2017-17564 · Cesanta · Mongoose Os+1

Carel Van Rooyen + 2 · Published 2017-04-10 · Updated 2018-10-09 · CVE-2017-7185

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Cesanta Mongoose Embedded Web Server Library versions 6.7 and earlier Mongoose OS versions 1.2 and earlier

Description The issue is related to a use-after-free vulnerability in the mg http multipart wait for boundary function. This vulnerability can be exploited by sending a multipart/form-data POST request without a MIME boundary string, which can cause a denial of service (crash).

Recommendations For Cesanta Mongoose Embedded Web Server Library versions 6.7 and earlier, update to a version later than 6.7 to resolve the issue. For Mongoose OS versions 1.2 and earlier, update to a version later than 1.2 to resolve the issue. As a temporary workaround, consider restricting access to the mg http multipart wait for boundary function until a patch is available.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2017-7185

Affected Products

Mongoose Embedded Web Server Library

Mongoose Os

References · 8

• 🔥 https://exploit-db.com/exploits/41826 · Exploit
• 🔥 https://compass-security.com/fileadmin/Datein/Research/Advisories/CVE-2017-7185_mongoose_os_use_after_free.txt · Exploit
• https://github.com/cesanta/mongoose/commit/b8402ed0733e3f244588b61ad5fedd093e3cf9cc · Patch
• https://github.com/cesanta/mongoose-os/commit/042eb437973a202d00589b13d628181c6de5cf5b · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2017-7185 · Security Note
• https://osv.dev/vulnerability/CVE-2017-7185 · Vendor Advisory
• http://securityfocus.com/bid/97370 · Note
• http://securityfocus.com/archive/1/540355/100/0/threaded · Note