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Gentoo Linux Security Advisory GLSA 200507-05 |
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http://security.gentoo.org/ |
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Severity: High |
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Title: zlib: Buffer overflow |
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Date: July 06, 2005 |
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Bugs: #98121 |
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ID: 200507-05 |
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Synopsis |
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======== |
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|
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A buffer overflow has been discovered in zlib, potentially resulting in |
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the execution of arbitrary code. |
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Background |
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========== |
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zlib is a widely used free and patent unencumbered data compression |
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library. |
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Affected packages |
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================= |
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|
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------------------------------------------------------------------- |
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Package / Vulnerable / Unaffected |
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------------------------------------------------------------------- |
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1 sys-libs/zlib < 1.2.2-r1 >= 1.2.2-r1 |
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Description |
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=========== |
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|
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Tavis Ormandy of the Gentoo Linux Security Audit Team discovered a |
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buffer overflow in zlib. A bounds checking operation failed to take |
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invalid data into account, allowing a specifically malformed deflate |
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data stream to overrun a buffer. |
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Impact |
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====== |
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An attacker could construct a malformed data stream, embedding it |
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within network communication or an application file format, potentially |
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resulting in the execution of arbitrary code when decoded by the |
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application using the zlib library. |
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Workaround |
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========== |
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There is no known workaround at this time. |
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Resolution |
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========== |
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All zlib users should upgrade to the latest version: |
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# emerge --sync |
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# emerge --ask --oneshot --verbose ">=sys-libs/zlib-1.2.2-r1" |
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References |
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========== |
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[ 1 ] CAN-2005-2096 |
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http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2096 |
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Availability |
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============ |
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This GLSA and any updates to it are available for viewing at |
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the Gentoo Security Website: |
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http://security.gentoo.org/glsa/glsa-200507-05.xml |
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Concerns? |
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========= |
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Security is a primary focus of Gentoo Linux and ensuring the |
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confidentiality and security of our users machines is of utmost |
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importance to us. Any security concerns should be addressed to |
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security@g.o or alternatively, you may file a bug at |
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http://bugs.gentoo.org. |
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License |
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======= |
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Copyright 2005 Gentoo Foundation, Inc; referenced text |
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belongs to its owner(s). |
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The contents of this document are licensed under the |
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Creative Commons - Attribution / Share Alike license. |
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http://creativecommons.org/licenses/by-sa/2.0 |
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