Exadel Flamingo amf-serializer 2.2.0 AMF3 Deserializer AMF3 Message xml external entity reference

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Exadel Flamingo amf-serializer 2.2.0. It has been rated as critical. Affected by this issue is some unknown functionality of the component AMF3 Deserializer. This manipulation as part of AMF3 Message causes xml external entity reference. The identification of this vulnerability is CVE-2017-3208. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Exadel Flamingo amf-serializer 2.2.0. It has been declared as critical. Affected by this vulnerability is an unknown function of the component AMF3 Deserializer. The manipulation as part of a AMF3 Message leads to a xml external entity reference vulnerability. The CWE definition for the vulnerability is CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Java implementation of AMF3 deserializers used by Flamingo amf-serializer by Exadel, version 2.2.0, allows external entity references (XXEs) from XML documents embedded within AMF3 messages. If the XML parsing is handled incorrectly it could potentially expose sensitive data on the server, denial of service, or server side request forgery.

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 at kb.cert.org. This vulnerability is known as CVE-2017-3208 since 12/05/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are 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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11911 (WebORB for Java Multiple Remote Vulnerabilities).

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 97384†). The entries VDB-99550, VDB-119322, VDB-119323 and VDB-119324 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

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

NVD Base Score: 9.8
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: Xml external entity reference
CWE: CWE-611 / CWE-610
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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Qualys ID: 🔍
Qualys Name: 🔍

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-2017-3208 (🔍)
GCVE (CVE): GCVE-0-2017-3208
GCVE (VulDB): GCVE-100-119329
CERT: 🔍
SecurityFocus: 97384 - WebORB for Java Remote Code Execution and XML External Entity Injection Vulnerabilities

See also: 🔍

Entryinfo

Created: 06/12/2018 08:47
Updated: 12/26/2024 23:47
Changes: 06/12/2018 08:47 (64), 02/17/2020 18:06 (4), 12/26/2024 23:47 (17)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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