Use-After-Free Vulnerability in Cesanta Mongoose Embedded Web Server Library
CVE-2018-20356

9.8CRITICAL

Key Information:

Vendor

Cesanta

Status
Mongoose
Vendor
CVE Published:
10 June 2019

What is CVE-2018-20356?

The Mongoose Embedded Web Server Library, specifically in versions 6.13 and earlier, contains a use-after-free vulnerability tied to the mg_http_free_proto_data_cgi function. This flaw can lead to an invalid read operation, which may be exploited to crash the application or potentially execute remote code on affected systems. Proper handling and timely updates are crucial to mitigate risks associated with this vulnerability.

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References

https://github.com/insi2304/mongoose-6.13-fuzz/blob/maste...
x_refsource_MISC

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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