zlib inflate and inflateback denial of service
| zlib-inflate-inflateback-dos (17119) |  Low Risk |
Description:
zlib is vulnerable to a denial of service attack, caused by improper handling of errors in the inflate and inflateback functions. A remote attacker could use this vulnerability to cause a denial of service.
Platforms Affected:
- Conectiva, Linux 10
- Gentoo, Linux
- GNU, zlib 1.2.1
- GNU, zlib 1.2.1.3
- GNU, zlib 1.2.2
- MandrakeSoft, Mandrake Linux 10.0 AMD64
- MandrakeSoft, Mandrake Linux 10.0
- OpenPKG, OpenPKG 2.0
- OpenPKG, OpenPKG 2.1
- OpenPKG, OpenPKG 2.2
- OpenPKG, OpenPKG 2.3
- OpenPKG, OpenPKG CURRENT
- SCO, SCO UnixWare 7.1.3up
- SCO, SCO UnixWare 7.1.4
- SuSE, Linux Enterprise Server 9
- SuSE, SuSE Linux 9.1
- SuSE, SuSE SLES 9
- Trustix, Enterprise Server 2
- Trustix, Secure Linux 1.5
- Trustix, Secure Linux 2.0
- Trustix, Secure Linux 2.1
Remedy:
Upgrade to the latest version of zlib (1.2.2 or later), available fom the zlib Web site. See References.
For OpenPKG:
Refer to OpenPKG Security Advisory OpenPKG-SA-2005.007 for patch, upgrade, or suggested workaround information. See References.
For Trustix Secure Linux:
Upgrade to the latest zlib package, as listed below. Refer to Trustix Secure Linux Security Advisory #2004-0043 for more information. See References.
Trustix Secure Linux 2.0: 1.7.1-15tr.i586 or later
Trustix Secure Linux 2.1: 2.2.1-5tr.i586 or later
Trustix Secure Linux 1.5: 2.2.11-0.1tr.i586 or later
Trustix Operating System - Enterprise Server 2: 2.2.1-5tr.i586 or later
For Gentoo Linux:
Upgrade to the latest version of zlib (1.2.1-r3 or later), as listed in GLSA 200408-26. See References.
For SuSE Linux:
Upgrade to the latest zlib package, as listed below. Refer to SuSE Security Announcement SuSE-SUSE-SA:2004:029 for more information. See References.
SuSE Linux 9.1: 1.2.1-70.6 or later
For Mandrake Linux:
Upgrade to the latest zlib package, as listed below. Refer to MandrakeSoft Security Advisory MDKSA-2004:090 : zlib for more information. See References.
Mandrake Linux 10.0: 1.2.1-2.1.100mdk or later
For Conectiva Linux:
Upgrade to the latest zlib package, as listed below. Refer to Conectiva Linux Security Announcement CLSA-2004:865 for more information. See References.
Conectiva Linux 10: 1.2.1-47972U10_1cl or later
For Slackware Linux:
Upgrade to the latest zlib package, as listed below. Refer to Slackware Security Announcement SSA:2004-278-02 for more information. See References.
Slackware Linux 10: zlib-1.2.2l or later
Slackware Linux -current: zlib-1.2.2l or later
For SCO UnixWare 7.1.4, and UnixWare 7.1.3:
Upgrade to the appropriate fixed binaries, as listed in SCO Security Advisory SCOSA-2004.17. See References.
For Conectiva Linux:
Upgrade to the latest zlib package, as listed below. Refer to Conectiva Linux Security Announcement CLSA-2004:878 for more information. See References.
Conectiva Linux 10: 1.2.1-47972U10_2cl or later
For other distributions:
Contact your vendor for upgrade or patch information.
Consequences:
Denial of Service
References:
- BugTraq Mailing List, Mon Nov 01 2004 - 15:43:35 CST, zlib 1.2.2 released at http://archives.neohapsis.com/archives/bugtraq/2004-11/0021.html.
- Conectiva Linux Security Announcement CLSA-2004:865, Fix for denial of service vulnerabilities at http://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=000865.
- Conectiva Linux Security Announcement CLSA-2004:878, Fix for denial of service vulnerabilities at http://distro.conectiva.com.br/atualizacoes/index.php?id=a&anuncio=000878.
- Debian Bug Report Log - #252253, SIGSEGV in zlib1g 1.2.1.1-3 with pwzip-file at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=252253.
- Slackware Security Advisory Mon, 4 Oct 2004 12:52:54 -0700 (PDT), zlib DoS at http://www.slackware.com/security/viewer.php?l=slackware-security&y=2004&m=slackware-security.319160.
- Trustix Secure Linux Security Advisory #2004-0043, Multiple vulnerabilities at http://www.trustix.net/errata/2004/0043/.
- zlib Web site, zlib Home site at http://www.zlib.net/.
- BID-11051: Zlib Compression Library Denial Of Service Vulnerability
- CVE-2004-0797: The error handling in the (1) inflate and (2) inflateBack functions in ZLib compression library 1.2.x allows local users to cause a denial of service (application crash).
- GLSA-200408-26: zlib: Denial of service vulnerability
- MDKSA-2004:090: Updated zlib packages fix DoS vulnerability
- OpenPKG-SA-2004.038: zlib
- OpenPKG-SA-2005.007: CVS
- OSVDB ID: 9360: zlib inflate Function Error Handling DoS
- OSVDB ID: 9361: zlib inflateBack Function Error Handling DoS
- SA11129: zlib Denial of Service Vulnerability
- SA17054: CVS zlib Vulnerabilities
- SECTRACK ID: 1011085: Zlib Error Handling Bug in inflate() and inflateBack() Lets Remote Users Deny Service
- SUSE-SA:2004:029: zlib: denial of service
- US-CERT VU#238678: The zlib compression library is vulnerable to a denial-of-service condition
Reported:
Aug 25, 2004
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