IBM WebSphere Application Server 8.5/9.0 Serialized Object deserialization

CVSS Meta Temp Score
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CTI Interest Score
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8.6$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in IBM WebSphere Application Server 8.5/9.0. This impacts an unknown function. The manipulation as part of Serialized Object leads to deserialization. This vulnerability is documented as CVE-2019-4279. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in IBM WebSphere Application Server 8.5/9.0 (Application Server Software) and classified as critical. This issue affects some unknown functionality. The manipulation as part of a Serialized 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. The summary by CVE is:

IBM WebSphere Application Server 8.5 and 9.0 could allow a remote attacker to execute arbitrary code on the system with a specially-crafted sequence of serialized objects from untrusted sources. IBM X-Force ID: 160445.

The bug was discovered 05/16/2019. The weakness was released 05/17/2019 (Website). The advisory is shared at exchange.xforce.ibmcloud.com. The identification of this vulnerability is CVE-2019-4279 since 01/03/2019. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by b0yd in Ruby/Metasploit and been published even before and not after the advisory. The exploit is available at github.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371830 (IBM WebSphere Application Server Remote code execution Vulnerability (ibm10883628)).

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 Exploit-DB (46969). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.7
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 9.0
CNA Vector (IBM Corporation): 🔍

CVSSv2info

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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: 🔍
Access: Public
Status: Highly functional
Author: b0yd
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: exploit/windows/ibm/ibm_was_dmgr_java_deserialization_rce
MetaSploit Name: IBM Websphere Application Server Network Deployment Untrusted Data Deserialization Remote Code Execution

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/03/2019 🔍
05/15/2019 +131 days 🔍
05/16/2019 +1 days 🔍
05/17/2019 +1 days 🔍
05/18/2019 +1 days 🔍
11/08/2025 +2366 days 🔍

Sourcesinfo

Vendor: ibm.com

Advisory: exchange.xforce.ibmcloud.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2019-4279 (🔍)
GCVE (CVE): GCVE-0-2019-4279
GCVE (VulDB): GCVE-100-135221
X-Force: 160445
SecurityFocus: 108450

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/18/2019 09:31
Updated: 11/08/2025 23:51
Changes: 05/18/2019 09:31 (59), 06/13/2020 16:48 (1), 09/22/2023 00:12 (4), 09/22/2023 00:21 (12), 08/25/2024 11:45 (8), 08/25/2024 11:48 (17), 11/08/2025 23:51 (9)
Complete: 🔍
Committer: misc
Cache ID: 216:6E8:103

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