Cesanta Mongoose 6.8 HTTP Server HTTP POST Request use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Cesanta Mongoose 6.8. It has been classified as critical. This affects an unknown function of the component HTTP Server. The manipulation as part of HTTP POST Request leads to use after free. This vulnerability is referenced as CVE-2017-2891. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Cesanta Mongoose 6.8. It has been rated as critical. This issue affects an unknown code block of the component HTTP Server. The manipulation as part of a HTTP POST Request leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An exploitable use-after-free vulnerability exists in the HTTP server implementation of Cesanta Mongoose 6.8. An ordinary HTTP POST request with a CGI target can cause a reuse of previously freed pointer potentially resulting in remote code execution. An attacker needs to send this HTTP request over the network to trigger this vulnerability.

The bug was discovered 10/31/2017. The weakness was published 11/07/2017 (Website). The advisory is shared at talosintelligence.com. The identification of this vulnerability is CVE-2017-2891 since 12/01/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Similar entries are available at VDB-109209, VDB-109208, VDB-109207 and VDB-109206. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 9.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.8
CNA Vector (Talos): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/01/2016 🔍
10/31/2017 +334 days 🔍
11/07/2017 +7 days 🔍
11/07/2017 +0 days 🔍
11/08/2017 +1 days 🔍
01/06/2023 +1885 days 🔍

Sourcesinfo

Advisory: talosintelligence.com
Status: Not defined

CVE: CVE-2017-2891 (🔍)
GCVE (CVE): GCVE-0-2017-2891
GCVE (VulDB): GCVE-100-109205
See also: 🔍

Entryinfo

Created: 11/08/2017 07:49
Updated: 01/06/2023 17:07
Changes: 11/08/2017 07:49 (58), 12/05/2019 08:17 (1), 01/06/2023 17:07 (14)
Complete: 🔍
Cache ID: 216::103

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