Security Bulletin: IBM® Db2® is affected by a vulnerability in the open source zlib library. (CVE-2023-45853)

Summary

IBM® Db2® is affected by a vulnerability in the open source zlib library.

Vulnerability Details

CVEID:CVE-2023-45853
**DESCRIPTION:**MiniZip is vulnerable to a denial of service, caused by an integer overflow and resultant heap-based buffer overflow in the zipOpenNewFileInZip4_64 function. By persuading a victim to open a specially crafted file, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 5.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/268650 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)

Affected Products and Versions

10.5.0 - 10.5.11

|

Server

IBM® Db2®|

11.1.4 - 11.1.4.7

|

Server

IBM® Db2®|

11.5.0 - 11.5.9

|

Server

All platforms are affected.
Earlier releases (10.1, 9.7 etc.) may also be affected, but they are no longer supported.

Remediation/Fixes

Customers running any vulnerable fixpack level of an affected Program, V10.5, v11.1 and V11.5, can download the special build containing the interim fix for this issue from Fix Central. These special builds are available based on the most recent fixpack level for each impacted release: V10.5 FP11, V11.1.4 FP7, and V11.5.9. They can be applied to any affected fixpack level of the appropriate release to remediate this vulnerability.

AIX 64-bit
HP-UX 64-bit
Linux 32-bit, x86-32
Linux 64-bit, x86-64
Linux 64-bit, POWER™ big endian
Linux 64-bit, POWER™ little endian
Linux 64-bit, System z®, System z9® or zSeries®
Solaris 64-bit, SPARC
Solaris 64-bit, x86-64
Windows 32-bit, x86
Windows 64-bit, x86

V11.1| TBD| DT261574| Special Build for V11.1.4 FP7:

AIX 64-bit
Linux 32-bit, x86-32
Linux 64-bit, x86-64
Linux 64-bit, POWER™ little endian
Linux 64-bit, System z®, System z9® or zSeries®
Solaris 64-bit, SPARC
Windows 32-bit, x86
Windows 64-bit, x86

V11.5| TBD| DT261574|

Special Build for V11.5.0:

AIX 64-bit (for OS7.1)

Special Build #42458 or later for V11.5.8 available at this link:
<https://www.ibm.com/support/pages/node/6856211&gt;

Special Build #42449 or later for V11.5.9 available at this link:
<https://www.ibm.com/support/pages/node/7087189&gt;

IBM does not disclose key Db2 functionality nor replication steps for a vulnerability to avoid providing too much information to any potential malicious attacker. IBM does not want to enable a malicious attacker with sufficient knowledge to craft an exploit of the vulnerability.

Workarounds and Mitigations

None