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author | Alex Legler <alex@a3li.li> | 2015-03-08 22:02:38 +0100 |
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committer | Alex Legler <alex@a3li.li> | 2015-03-08 22:02:38 +0100 |
commit | a24567fbc43f221b14e805f9bc0b7c6d16911c46 (patch) | |
tree | 910a04fe6ee560ac0eebac55f3cd2781c3519760 /glsa-200901-03.xml | |
download | glsa-a24567fbc43f221b14e805f9bc0b7c6d16911c46.tar.gz glsa-a24567fbc43f221b14e805f9bc0b7c6d16911c46.tar.bz2 glsa-a24567fbc43f221b14e805f9bc0b7c6d16911c46.zip |
Import existing advisories
Diffstat (limited to 'glsa-200901-03.xml')
-rw-r--r-- | glsa-200901-03.xml | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/glsa-200901-03.xml b/glsa-200901-03.xml new file mode 100644 index 00000000..e50daca0 --- /dev/null +++ b/glsa-200901-03.xml @@ -0,0 +1,81 @@ +<?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="200901-03"> + <title>pdnsd: Denial of Service and cache poisoning</title> + <synopsis> + Two errors in pdnsd allow for Denial of Service and cache poisoning. + </synopsis> + <product type="ebuild">pdnsd</product> + <announced>January 11, 2009</announced> + <revised>January 11, 2009: 01</revised> + <bug>231285</bug> + <access>remote</access> + <affected> + <package name="net-dns/pdnsd" auto="yes" arch="*"> + <unaffected range="ge">1.2.7</unaffected> + <vulnerable range="lt">1.2.7</vulnerable> + </package> + </affected> + <background> + <p> + pdnsd is a proxy DNS server with permanent caching that is designed to + cope with unreachable DNS servers. + </p> + </background> + <description> + <p> + Two issues have been reported in pdnsd: + </p> + <ul> + <li> + The p_exec_query() function in src/dns_query.c does not properly handle + many entries in the answer section of a DNS reply, related to a + "dangling pointer bug" (CVE-2008-4194). + </li> + <li> + The default value for query_port_start was set to 0, disabling UDP + source port randomization for outgoing queries (CVE-2008-1447). + </li> + </ul> + </description> + <impact type="normal"> + <p> + An attacker could exploit the second weakness to poison the cache of + pdnsd and thus spoof DNS traffic, which could e.g. lead to the + redirection of web or mail traffic to malicious sites. The first issue + can be exploited by enticing pdnsd to send a query to a malicious DNS + server, or using the port randomization weakness, and might lead to a + Denial of Service. + </p> + </impact> + <workaround> + <p> + Port randomization can be enabled by setting the "query_port_start" + option to 1024 which would resolve the CVE-2008-1447 issue. + </p> + </workaround> + <resolution> + <p> + All pdnsd users should upgrade to the latest version: + </p> + <code> + # emerge --sync + # emerge --ask --oneshot --verbose ">=net-dns/pdnsd-1.2.7"</code> + </resolution> + <references> + <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-1447">CVE-2008-1447</uri> + <uri link="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-4194">CVE-2008-4194</uri> + </references> + <metadata tag="requester" timestamp="Wed, 26 Nov 2008 18:15:10 +0000"> + rbu + </metadata> + <metadata tag="submitter" timestamp="Wed, 26 Nov 2008 23:10:06 +0000"> + rbu + </metadata> + <metadata tag="bugReady" timestamp="Wed, 26 Nov 2008 23:10:19 +0000"> + rbu + </metadata> +</glsa> |