USN-5332-1 fixed a vulnerability in Bind. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory details:
Xiang Li, Baojun Liu, Chaoyi Lu, and Changgen Zou discovered that Bind incorrectly handled certain bogus NS records when using forwarders. A remote attacker could possibly use this issue to manipulate cache results. (CVE-2021-25220)
{
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"binary_name": "bind9"
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{
"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm6",
"binary_name": "bind9-host"
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"binary_name": "bind9utils"
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"binary_name": "dnsutils"
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"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm6",
"binary_name": "host"
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"binary_name": "libbind-dev"
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"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm6",
"binary_name": "libbind9-90"
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"binary_name": "libdns100"
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"binary_name": "libisc95"
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"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm6",
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"binary_version": "1:9.9.5.dfsg-3ubuntu0.19+esm6",
"binary_name": "lwresd"
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"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
{
"cves": [
{
"id": "CVE-2021-25220",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
],
"ecosystem": "Ubuntu:Pro:14.04:LTS"
}
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"binary_name": "bind9"
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"binary_name": "bind9-host"
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"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19+esm2",
"binary_name": "bind9utils"
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"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19+esm2",
"binary_name": "dnsutils"
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"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19+esm2",
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"binary_name": "libisc-export160"
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"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19+esm2",
"binary_name": "libisc160"
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"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19+esm2",
"binary_name": "libisccc-export140"
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"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19+esm2",
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"binary_name": "libisccfg140"
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"binary_version": "1:9.10.3.dfsg.P4-8ubuntu1.19+esm2",
"binary_name": "liblwres141"
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"binary_name": "lwresd"
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"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
{
"cves": [
{
"id": "CVE-2021-25220",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}