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Gentoo: 200303-25 Critical: zlib Buffer Overrun Remote Exploit

gentoo
Calendar Grey March 28, 2003
Dist Gentoo Esm H88
GENTOO LINUX SECURITY ALERT 202303-14: OpenSSL flaw identified in Gentoo installations, urgent patch recommended.
The function gzprintf() is similar in behaviour to fprintf() except that by default, this function will smash the stack if called with arguments that expand to more than Z_PRINTF_B...

Summary


- - ---------------------------------------------------------------------
GENTOO LINUX SECURITY ANNOUNCEMENT 200303-25
- - ---------------------------------------------------------------------

- - ---------------------------------------------------------------------
- From advisory: "zlib contains a function called gzprintf(). This is similar in behaviour to fprintf() except that by default, this function will smash the stack if called with arguments that expand to more than Z_PRINTF_BUFSIZE (=4096 by default) bytes."
Read the full advisory at

SOLUTION
It is recommended that all Gentoo Linux users who are running sys-libs/zlib upgrade to zlib-1.1.4-r1 as follows:
emerge sync emerge zlib emerge clean
- - --------------------------------------------------------------------- aliz@gentoo.org - GnuPG key is available at - - ---------------------------------------------------------------------
1.1.4-r1

Resolution

References

Availability

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Concerns

Severity
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PACKAGE : zlib
SUMMARY : buffer overrun
DATE : 2003-03-28 10:50 UTC
EXPLOIT : remote
VERSIONS AFFECTED : <1.1.4-r1 : fixed version>=1.1.4-r1
CVE : CAN-2003-0107

Synopsis

Background

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Affected Packages

Impact

Workaround

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