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authorAlec Warner <antarus@scriptkitty.com>2011-03-03 14:17:24 -0800
committerAlec Warner <antarus@scriptkitty.com>2011-03-03 14:17:24 -0800
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+<?xml version="1.0" encoding="utf-8"?>
+<?xml-stylesheet href="/xsl/glsa.xsl" type="text/xsl"?>
+<?xml-stylesheet href="/xsl/guide.xsl" type="text/xsl"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+
+<glsa id="200408-24">
+ <title>Linux Kernel: Multiple information leaks</title>
+ <synopsis>
+ Multiple information leaks have been found in the Linux kernel, allowing an
+ attacker to obtain sensitive data which may be used for further
+ exploitation of the system.
+ </synopsis>
+ <product type="ebuild">Kernel</product>
+ <announced>August 25, 2004</announced>
+ <revised>May 22, 2006: 02</revised>
+ <bug>59378</bug>
+ <bug>59905</bug>
+ <bug>59769</bug>
+ <access>local</access>
+ <affected>
+ <package name="sys-kernel/aa-sources" auto="no" arch="*">
+ <unaffected range="rge">2.4.23-r2</unaffected>
+ <unaffected range="ge">2.6.5-r5</unaffected>
+ <vulnerable range="lt">2.6.5-r5</vulnerable>
+ </package>
+ <package name="sys-kernel/alpha-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.21-r12</unaffected>
+ <vulnerable range="lt">2.4.21-r12</vulnerable>
+ </package>
+ <package name="sys-kernel/ck-sources" auto="no" arch="*">
+ <unaffected range="rge">2.4.26-r1</unaffected>
+ <unaffected range="ge">2.6.7-r5</unaffected>
+ <vulnerable range="lt">2.6.7-r5</vulnerable>
+ </package>
+ <package name="sys-kernel/development-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.6.8</unaffected>
+ <vulnerable range="lt">2.6.8</vulnerable>
+ </package>
+ <package name="sys-kernel/gentoo-dev-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.6.7-r12</unaffected>
+ <vulnerable range="lt">2.6.7-r12</vulnerable>
+ </package>
+ <package name="sys-kernel/gentoo-sources" auto="yes" arch="*">
+ <unaffected range="rge">2.4.19-r22</unaffected>
+ <unaffected range="rge">2.4.20-r25</unaffected>
+ <unaffected range="rge">2.4.22-r16</unaffected>
+ <unaffected range="rge">2.4.25-r9</unaffected>
+ <unaffected range="ge">2.4.26-r9</unaffected>
+ <vulnerable range="lt">2.4.26-r9</vulnerable>
+ </package>
+ <package name="sys-kernel/grsec-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.27.2.0.1-r1</unaffected>
+ <vulnerable range="lt">2.4.27.2.0.1-r1</vulnerable>
+ </package>
+ <package name="sys-kernel/gs-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.25_pre7-r11</unaffected>
+ <vulnerable range="lt">2.4.25_pre7-r11</vulnerable>
+ </package>
+ <package name="sys-kernel/hardened-dev-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.6.7-r7</unaffected>
+ <vulnerable range="lt">2.6.7-r7</vulnerable>
+ </package>
+ <package name="sys-kernel/hardened-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.27-r1</unaffected>
+ <vulnerable range="lt">2.4.27-r1</vulnerable>
+ </package>
+ <package name="sys-kernel/hppa-dev-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.6.7_p14-r1</unaffected>
+ <vulnerable range="lt">2.6.7_p14-r1</vulnerable>
+ </package>
+ <package name="sys-kernel/hppa-sources" auto="no" arch="*">
+ <unaffected range="ge">2.4.26_p7-r1</unaffected>
+ <vulnerable range="lt">2.4.26_p7-r1</vulnerable>
+ </package>
+ <package name="sys-kernel/ia64-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.24-r10</unaffected>
+ <vulnerable range="lt">2.4.24-r10</vulnerable>
+ </package>
+ <package name="sys-kernel/mips-sources" auto="yes" arch="*">
+ <unaffected range="rge">2.4.25-r8</unaffected>
+ <unaffected range="rge">2.4.26-r8</unaffected>
+ <unaffected range="rge">2.6.4-r8</unaffected>
+ <unaffected range="rge">2.6.6-r8</unaffected>
+ <unaffected range="ge">2.6.7-r5</unaffected>
+ <vulnerable range="lt">2.6.6-r8</vulnerable>
+ </package>
+ <package name="sys-kernel/mm-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.6.8_rc4-r1</unaffected>
+ <vulnerable range="lt">2.6.8_rc4-r1</vulnerable>
+ </package>
+ <package name="sys-kernel/openmosix-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.24-r4</unaffected>
+ <vulnerable range="lt">2.4.24-r4</vulnerable>
+ </package>
+ <package name="sys-kernel/pac-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.23-r12</unaffected>
+ <vulnerable range="lt">2.4.23-r12</vulnerable>
+ </package>
+ <package name="sys-kernel/pegasos-dev-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.6.8</unaffected>
+ <vulnerable range="lt">2.6.8</vulnerable>
+ </package>
+ <package name="sys-kernel/rsbac-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.26-r5</unaffected>
+ <vulnerable range="lt">2.4.26-r5</vulnerable>
+ </package>
+ <package name="sys-kernel/rsbac-dev-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.6.7-r5</unaffected>
+ <vulnerable range="lt">2.6.7-r5</vulnerable>
+ </package>
+ <package name="sys-kernel/selinux-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.26-r3</unaffected>
+ <vulnerable range="lt">2.4.26-r3</vulnerable>
+ </package>
+ <package name="sys-kernel/sparc-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.27-r1</unaffected>
+ <vulnerable range="lt">2.4.27-r1</vulnerable>
+ </package>
+ <package name="sys-kernel/uclinux-sources" auto="yes" arch="*">
+ <unaffected range="rge">2.4.26_p0-r6</unaffected>
+ <unaffected range="ge">2.6.7_p0-r5</unaffected>
+ <vulnerable range="lt">2.6.7_p0-r5</vulnerable>
+ </package>
+ <package name="sys-kernel/usermode-sources" auto="yes" arch="*">
+ <unaffected range="rge">2.4.24-r9</unaffected>
+ <unaffected range="rge">2.4.26-r6</unaffected>
+ <unaffected range="ge">2.6.6-r6</unaffected>
+ <vulnerable range="lt">2.6.6-r6</vulnerable>
+ </package>
+ <package name="sys-kernel/vanilla-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.27</unaffected>
+ <vulnerable range="lt">2.4.27</vulnerable>
+ </package>
+ <package name="sys-kernel/vserver-sources" auto="yes" arch="*">
+ <unaffected range="ge">2.4.26.1.28-r4</unaffected>
+ <vulnerable range="lt">2.4.26.1.28-r4</vulnerable>
+ </package>
+ <package name="sys-kernel/win4lin-sources" auto="yes" arch="*">
+ <unaffected range="rge">2.4.26-r6</unaffected>
+ <unaffected range="ge">2.6.7-r2</unaffected>
+ <vulnerable range="lt">2.6.7-r5</vulnerable>
+ </package>
+ <package name="sys-kernel/wolk-sources" auto="yes" arch="*">
+ <unaffected range="rge">4.9-r14</unaffected>
+ <unaffected range="rge">4.11-r10</unaffected>
+ <unaffected range="ge">4.14-r7</unaffected>
+ <vulnerable range="lt">4.14-r7</vulnerable>
+ </package>
+ <package name="sys-kernel/xbox-sources" auto="yes" arch="*">
+ <unaffected range="rge">2.4.27-r1</unaffected>
+ <unaffected range="ge">2.6.7-r5</unaffected>
+ <vulnerable range="lt">2.6.7-r5</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>
+ The Linux kernel is responsible for managing the core aspects of a
+ GNU/Linux system, providing an interface for core system applications
+ as well as providing the essential structure and capability to access
+ hardware that is needed for a running system.
+ </p>
+ </background>
+ <description>
+ <p>
+ The Linux kernel allows a local attacker to obtain sensitive kernel
+ information by gaining access to kernel memory via several leaks in the
+ /proc interfaces. These vulnerabilities exist in various drivers which
+ make up a working Linux kernel, some of which are present across all
+ architectures and configurations.
+ </p>
+ <p>
+ CAN-2004-0415 deals with addressing invalid 32 to 64 bit conversions in
+ the kernel, as well as insecure direct access to file offset pointers
+ in kernel code which can be modified by the open(...), lseek(...) and
+ other core system I/O functions by an attacker.
+ </p>
+ <p>
+ CAN-2004-0685 deals with certain USB drivers using uninitialized
+ structures and then using the copy_to_user(...) kernel call to copy
+ these structures. This may leak uninitialized kernel memory, which can
+ contain sensitive information from user applications.
+ </p>
+ <p>
+ Finally, a race condition with the /proc/.../cmdline node was found,
+ allowing environment variables to be read while the process was still
+ spawning. If the race is won, environment variables of the process,
+ which might not be owned by the attacker, can be read.
+ </p>
+ </description>
+ <impact type="normal">
+ <p>
+ These vulnerabilities allow a local unprivileged attacker to access
+ segments of kernel memory or environment variables which may contain
+ sensitive information. Kernel memory may contain passwords, data
+ transferred between processes and any memory which applications did not
+ clear upon exiting as well as the kernel cache and kernel buffers.
+ </p>
+ <p>
+ This information may be used to read sensitive data, open other attack
+ vectors for further exploitation or cause a Denial of Service if the
+ attacker can gain superuser access via the leaked information.
+ </p>
+ </impact>
+ <workaround>
+ <p>
+ There is no temporary workaround for any of these information leaks
+ other than totally disabling /proc support - otherwise, a kernel
+ upgrade is required. A list of unaffected kernels is provided along
+ with this announcement.
+ </p>
+ </workaround>
+ <resolution>
+ <p>
+ Users are encouraged to upgrade to the latest available sources for
+ their system:
+ </p>
+ <code>
+ # emerge sync
+ # emerge -pv your-favorite-sources
+ # emerge your-favorite-sources
+
+ # # Follow usual procedure for compiling and installing a kernel.
+ # # If you use genkernel, run genkernel as you would normally.</code>
+ </resolution>
+ <references>
+ <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0415">CAN-2004-0415</uri>
+ <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0685">CAN-2004-0685</uri>
+ <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-1058">CVE-2004-1058</uri>
+ </references>
+ <metadata tag="submitter" timestamp="Tue, 17 Aug 2004 02:16:55 +0000">
+ plasmaroo
+ </metadata>
+</glsa>