Published:2015/05/19  Last Updated:2015/05/22

BGA32.DLL and QBga32.DLL contain multiple vulnerabilities


BGA32.DLL and QBga32.DLL contain multiple vulnerabilities.

Products Affected

  • BGA32.DLL
  • QBga32.DLL version 0.04 and earlier


BGA32.DLL is a compression/decompression library for gza and bza-format files. BGA32.DLL contains multiple vulnerabilities (including a buffer overflow) because it utilizes vulnerable zlib and bzip2 libraries.
QBga32.DLL, which is a wrapper of BGA32.DLL, is also affected.


Decompressing a specially crafted file may result in denial-of-service (DoS) or arbitrary code execution.


Use the latest version of QBga32.DLL
These vulnerabilities have been addressed in QBga32.DLL version 0.05.

Do not use BGA32.DLL
BGA32.DLL is no longer being developed or maintained. It is recommended to stop using BGA32.DLL.

Vendor Status

Vendor Link
Toshinobu Kimura Common Archivers Library: BGA32.DLL
Kazuhiro Inaba QBga32.DLL


JPCERT/CC Addendum

Vulnerability Analysis by JPCERT/CC

Analyzed on 2015.05.19 (CVSS Base Metrics)

What is CVSS?

Measures Severity Description
Access Vector(AV) Local (L) Adjacent Network (A) Network (N) A vulnerability exploitable with network access means the vulnerable software is bound to the network stack and the attacker does not require local network access or local access. Such a vulnerability is often termed "remotely exploitable".
Access Complexity(AC) High (H) Medium (M) Low (L) The access conditions are somewhat specialized.
Authentication(Au) Multiple (M) Single (S) None (N) Authentication is not required to exploit the vulnerability.
Confidentiality Impact(C) None (N) Partial (P) Complete (C) There is considerable informational disclosure. Access to some system files is possible, but the attacker does not have control over what is obtained, or the scope of the loss is constrained.
Integrity Impact(I) None (N) Partial (P) Complete (C) Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.
Availability Impact(A) None (N) Partial (P) Complete (C) There is reduced performance or interruptions in resource availability.

Base Score:6.8


This analysis assumes that a user decompresses a crafted file.


KONDOU, Kazuhiro reported this vulnerability to IPA.
JPCERT/CC coordinated with the developers under Information Security Early Warning Partnership.

Other Information

JPCERT Reports
CERT Advisory
CPNI Advisory
CVE CVE-2003-0107
JVN iPedia JVNDB-2015-000066

Update History

CVEs were added under the section "Other Information".