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authorV3n3RiX <venerix@koprulu.sector>2022-10-31 03:04:34 +0000
committerV3n3RiX <venerix@koprulu.sector>2022-10-31 03:04:34 +0000
commit7785404bd292918a4afd4780ccfc36d6626a49ca (patch)
treef20efc4a5e07261ddffa4c95f429a7facf18cd05 /metadata/glsa/glsa-202210-33.xml
parent34956175e774668656885552a9c94abab557e41c (diff)
gentoo auto-resync : 31:10:2022 - 03:04:34
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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE glsa SYSTEM "http://www.gentoo.org/dtd/glsa.dtd">
+<glsa id="202210-33">
+ <title>Libtirpc: Denial of Service</title>
+ <synopsis>A vulnerability has been discovered in Libtirpc which could result in denial of service.</synopsis>
+ <product type="ebuild">libtirpc</product>
+ <announced>2022-10-31</announced>
+ <revised count="1">2022-10-31</revised>
+ <bug>859634</bug>
+ <access>remote</access>
+ <affected>
+ <package name="net-libs/libtirpc" auto="yes" arch="*">
+ <unaffected range="ge">1.3.2</unaffected>
+ <vulnerable range="lt">1.3.2</vulnerable>
+ </package>
+ </affected>
+ <background>
+ <p>Libtirpc is a port of Sun&#39;s Transport-Independent RPC library to Linux.</p>
+ </background>
+ <description>
+ <p>Currently svc_run does not handle poll timeout and rendezvous_request
+does not handle EMFILE error returned from accept(2 as it used to.
+These two missing functionality were removed by commit b2c9430f46c4.
+
+The effect of not handling poll timeout allows idle TCP conections
+to remain ESTABLISHED indefinitely. When the number of connections
+reaches the limit of the open file descriptors (ulimit -n) then
+accept(2) fails with EMFILE. Since there is no handling of EMFILE
+error this causes svc_run() to get in a tight loop calling accept(2).
+This resulting in the RPC service of svc_run is being down, it&#39;s
+no longer able to service any requests.
+
+Due to a lack of handling of certain error cases, connections to Libtirpc could remain ESTABLISHED indefinitely.</p>
+ </description>
+ <impact type="normal">
+ <p>Denial of service can be achieved via establishing enough connections to Libtirpc to reach the limit of open file descriptors for the process.</p>
+ </impact>
+ <workaround>
+ <p>There is no known workaround at this time.</p>
+ </workaround>
+ <resolution>
+ <p>All Libtirpc users should upgrade to the latest version:</p>
+
+ <code>
+ # emerge --sync
+ # emerge --ask --oneshot --verbose ">=net-libs/libtirpc-1.3.2"
+ </code>
+ </resolution>
+ <references>
+ <uri link="https://nvd.nist.gov/vuln/detail/CVE-2021-46828">CVE-2021-46828</uri>
+ </references>
+ <metadata tag="requester" timestamp="2022-10-31T01:30:06.446859Z">ajak</metadata>
+ <metadata tag="submitter" timestamp="2022-10-31T01:30:06.456481Z">ajak</metadata>
+</glsa> \ No newline at end of file