diff options
author | V3n3RiX <venerix@koprulu.sector> | 2022-10-31 03:04:34 +0000 |
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committer | V3n3RiX <venerix@koprulu.sector> | 2022-10-31 03:04:34 +0000 |
commit | 7785404bd292918a4afd4780ccfc36d6626a49ca (patch) | |
tree | f20efc4a5e07261ddffa4c95f429a7facf18cd05 /metadata/glsa/glsa-202210-33.xml | |
parent | 34956175e774668656885552a9c94abab557e41c (diff) |
gentoo auto-resync : 31:10:2022 - 03:04:34
Diffstat (limited to 'metadata/glsa/glsa-202210-33.xml')
-rw-r--r-- | metadata/glsa/glsa-202210-33.xml | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/metadata/glsa/glsa-202210-33.xml b/metadata/glsa/glsa-202210-33.xml new file mode 100644 index 000000000000..a59781932aa2 --- /dev/null +++ b/metadata/glsa/glsa-202210-33.xml @@ -0,0 +1,54 @@ +<?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'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'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>
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