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Bug 86599 - CAN-2003-0107 zlib buffer overflow
Summary: CAN-2003-0107 zlib buffer overflow
Alias: None
Product: Red Hat Enterprise Linux 2.1
Classification: Red Hat
Component: zlib
Version: 2.1
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Jeff Johnson
QA Contact: Jay Turner
Depends On:
TreeView+ depends on / blocked
Reported: 2003-03-26 09:24 UTC by Mark J. Cox
Modified: 2015-01-08 00:04 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2003-05-29 08:34:49 UTC
Target Upstream Version:

Attachments (Terms of Use)

Description Mark J. Cox 2003-03-26 09:24:11 UTC
The function gzprintf within zlib, when called with a string longer than
Z_PRINTF_BUFZISE (= 4096 bytes), can overflow without giving a warning.

zlib-1.1.4 and earlier exhibit this behavior. There are no known exploits
of the gzprintf overrun, and only a few programs, including rpm2html
and gimp-print, are known to use the gzprintf function.

The problem has been fixed by checking the length of the output string
within gzprintf. 

This is CAN-2003-0107 and will be RHSA-2003:081

Comment 1 Jeff Johnson 2003-03-28 19:32:48 UTC
Needinfo so I don't have to stare at the duplicate bug.

Comment 2 Mark J. Cox 2003-05-29 08:34:49 UTC
Fixed by

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