CVE-2018-20356

CVSS V2 High 7.5 CVSS V3 Critical 9.8

Description

An invalid read of 8 bytes due to a use-after-free vulnerability in the mg_http_free_proto_data_cgi function call in mongoose.c in Cesanta Mongoose Embedded Web Server Library 6.13 and earlier allows a denial of service (application crash) or remote code execution.

Overview

CVE ID
CVE-2018-20356

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2019-06-10T17:29:02

Last Modified Date
2019-06-11T13:43:07

Weakness Enumerations

CWE	URL
CWE-416	http://cwe.mitre.org/data/definitions/416.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:cesanta:mongoose::::::::	1	OR		6.13

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
7.5

Severity
HIGH

Exploitability Score
10

Impact Score
6.4

CVSS Version 3

Version
3.0

Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
9.8

Base Severity
CRITICAL

Exploitability Score
3.9

Impact Score
5.9

References

Reference URL	Reference Tags
https://github.com/insi2304/mongoose-6.13-fuzz/blob/master/Simplest_Web_Server_Use_After_Free-read_mg_http_free_proto_data_cgi.png	Exploit Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2018-20356
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20356

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:50:39				Added to TrackCVE
2022-12-03 21:53:17	2019-06-10T17:29Z	2019-06-10T17:29:02	CVE Published Date	updated
2022-12-03 21:53:17		2019-06-11T13:43:07	CVE Modified Date	updated
2022-12-03 21:53:17		Analyzed	Vulnerability Status	updated