Exadel Flamingo amf-serializer 2.2.0 AMF3 Deserializer Serialized Java Object deserialization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Exadel Flamingo amf-serializer 2.2.0. The impacted element is an unknown function of the component AMF3 Deserializer. Such manipulation as part of Serialized Java Object leads to deserialization. This vulnerability is traded as CVE-2017-3201. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Exadel Flamingo amf-serializer 2.2.0. Affected by this issue is some unknown functionality of the component AMF3 Deserializer. The manipulation as part of a Serialized Java Object leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The Java implementation of AMF3 deserializers used in Flamingo amf-serializer by Exadel, version 2.2.0 derives class instances from java.io.Externalizable rather than the AMF3 specification's recommendation of flash.utils.IExternalizable. A remote attacker with the ability to spoof or control an RMI server connection may be able to send serialized Java objects that execute arbitrary code when deserialized.

The bug was discovered 04/04/2017. The weakness was shared 06/11/2018 by Markus Wulftange as confirmed advisory (CERT.org). The advisory is shared for download at kb.cert.org. This vulnerability is handled as CVE-2017-3201 since 12/05/2016. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 433 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.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 97380†). The entries VDB-99550, VDB-119322, VDB-119323 and VDB-119325 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.8

VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
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

12/05/2016 🔍
04/04/2017 +120 days 🔍
04/04/2017 +0 days 🔍
06/11/2018 +432 days 🔍
06/11/2018 +0 days 🔍
06/12/2018 +1 days 🔍
12/26/2024 +2389 days 🔍

Sourcesinfo

Advisory: kb.cert.org
Researcher: Markus Wulftange
Status: Confirmed

CVE: CVE-2017-3201 (🔍)
GCVE (CVE): GCVE-0-2017-3201
GCVE (VulDB): GCVE-100-119324
CERT: 🔍
SecurityFocus: 97380 - Exadel Flamingo Multiple Remote Code Execution and XML External Entity Injection Vulnerabilities

See also: 🔍

Entryinfo

Created: 06/12/2018 08:41
Updated: 12/26/2024 23:10
Changes: 06/12/2018 08:41 (62), 02/17/2020 17:29 (4), 12/26/2024 23:10 (16)
Complete: 🔍
Cache ID: 216:6EA:103

Once again VulDB remains the best source for vulnerability data.

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