116 lines
4.7 KiB
XML
116 lines
4.7 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
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<glsa id="201602-02">
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<title>GNU C Library: Multiple vulnerabilities</title>
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<synopsis>Multiple vulnerabilities have been found in the GNU C library, the
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worst allowing for remote execution of arbitrary code.
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</synopsis>
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<product type="ebuild">glibc</product>
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<announced>2016-02-17</announced>
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<revised count="1">2016-02-17</revised>
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<bug>516884</bug>
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<bug>517082</bug>
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<bug>521932</bug>
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<bug>529982</bug>
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<bug>532874</bug>
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<bug>538090</bug>
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<bug>538814</bug>
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<bug>540070</bug>
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<bug>541246</bug>
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<bug>541542</bug>
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<bug>547296</bug>
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<bug>552692</bug>
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<bug>574880</bug>
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<access>local, remote</access>
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<affected>
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<package name="sys-libs/glibc" auto="yes" arch="*">
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<unaffected range="ge">2.21-r2</unaffected>
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<vulnerable range="lt">2.21-r2</vulnerable>
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</package>
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</affected>
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<background>
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<p>The GNU C library is the standard C library used by Gentoo Linux
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systems.
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</p>
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</background>
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<description>
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<p>Multiple vulnerabilities have been discovered in the GNU C Library:</p>
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<ul>
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<li>The Google Security Team and Red Hat discovered a stack-based buffer
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overflow in the send_dg() and send_vc() functions due to a buffer
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mismanagement when getaddrinfo() is called with AF_UNSPEC
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(CVE-2015-7547).
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</li>
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<li>The strftime() function access invalid memory when passed
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out-of-range data, resulting in a crash (CVE-2015-8776).
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</li>
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<li>An integer overflow was found in the __hcreate_r() function
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(CVE-2015-8778).
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</li>
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<li>Multiple unbounded stack allocations were found in the catopen()
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function (CVE-2015-8779).
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</li>
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</ul>
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<p>Please review the CVEs referenced below for additional vulnerabilities
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that had already been fixed in previous versions of sys-libs/glibc, for
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which we have not issued a GLSA before.
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</p>
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</description>
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<impact type="high">
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<p>A remote attacker could exploit any application which performs host name
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resolution using getaddrinfo() in order to execute arbitrary code or
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crash the application. The other vulnerabilities can possibly be
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exploited to cause a Denial of Service or leak information.
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</p>
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</impact>
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<workaround>
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<p>A number of mitigating factors for CVE-2015-7547 have been identified.
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Please review the upstream advisory and references below.
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</p>
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</workaround>
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<resolution>
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<p>All GNU C Library users should upgrade to the latest version:</p>
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<code>
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# emerge --sync
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# emerge --ask --oneshot --verbose ">=sys-libs/glibc-2.21-r2"
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</code>
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<p>It is important to ensure that no running process uses the old glibc
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anymore. The easiest way to achieve that is by rebooting the machine
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after updating the sys-libs/glibc package.
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</p>
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<p>Note: Should you run into compilation failures while updating, please
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see bug 574948.
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</p>
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</resolution>
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<references>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-7423">CVE-2013-7423</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0475">CVE-2014-0475</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0475">CVE-2014-0475</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-5119">CVE-2014-5119</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-6040">CVE-2014-6040</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-7817">CVE-2014-7817</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-8121">CVE-2014-8121</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-9402">CVE-2014-9402</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-1472">CVE-2015-1472</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-1781">CVE-2015-1781</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-7547">CVE-2015-7547</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8776">CVE-2015-8776</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8778">CVE-2015-8778</uri>
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<uri link="https://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-8779">CVE-2015-8779</uri>
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<uri link="https://googleonlinesecurity.blogspot.de/2016/02/cve-2015-7547-glibc-getaddrinfo-stack.html">
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Google Online Security Blog: "CVE-2015-7547: glibc getaddrinfo
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stack-based buffer overflow"
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</uri>
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</references>
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<metadata tag="requester" timestamp="2016-02-16T18:27:02Z">
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keytoaster
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</metadata>
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<metadata tag="submitter" timestamp="2016-02-17T15:37:09Z">
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keytoaster
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</metadata>
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</glsa>
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