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Security Bulletin: Security Bulletin: IBM Data Server Driver for JDBC and SQLJ is affected by a 3RD PARTY Unsafe deserialization

Security Bulletin


Summary

Unsafe deserialization in DB2 JDBC driver

Vulnerability Details

The Db2 JDBC driver deserializes the contents of /tmp/connlicj.bin (default path, this is configurable), which leads to object injection and potentially arbitrary code execution depending on the classpath.

CVEID: CVE-2017-1677
DESCRIPTION: IBM Data Server Driver for JDBC and SQLJ deserializes the contents of /tmp/connlicj.bin which leads to object injection and potentially arbitrary code execution depending on the classpath.
CVSS Base Score: 7.4
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/133999 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

DB2Connect 9.5

DB2Connect 9.7

DB2Connect 10.1

DB2Connect 10.5

DB2Connect 11.1

Remediation/Fixes

Product
VRMF
APAR
Remediation / First Fix
DB2Connect V11.1 M2FP2 SB IT23592 JCC version 3.72.41/4.23.48
See workaround or contact support
DB2Connect V10.5 FP9 SB IT23591 JCC version 3.69.75/4.19.76
See workaround or contact support
DB2Connect V10.1 FP6 SB IT23590 JCC version 3.65.138/4.15.147
See workaround or contact support
DB2Connect V9.7 FP11 SB IT23575 JCC version 3.64.142/4.14.147
See workaround or contact support
DB2Connect V9.5 FP10 SB IT23575 JCC version 3.64.142/4.14.147
See workaround or contact support

Workarounds and Mitigations

Workaround is to Set db2.jcc.outputDirectory property to a secure location so that driver will write the cache file to the configured location which can not accessed without proper authentication.
Or use the above Special build drivers.

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References

Complete CVSS v2 Guide
On-line Calculator v2

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

The vulnerability was reported to IBM by Martin Strand

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Document Information

Modified date:
05 July 2018

UID

swg22012479

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