drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Zwei Probleme in DHCP (Aktualisierung)
Name: |
Zwei Probleme in DHCP (Aktualisierung) |
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ID: |
USN-3586-2 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 12.04 ESM |
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Datum: |
Mo, 28. Mai 2018, 21:12 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5733
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5732 |
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Applikationen: |
ISC DHCP |
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Update von: |
Mehrere Probleme in ISC DHCP |
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Originalnachricht |
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========================================================================== Ubuntu Security Notice USN-3586-2 May 28, 2018
isc-dhcp vulnerabilities ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 ESM
Summary:
Several security issues were fixed in DHCP.
Software Description: - isc-dhcp: DHCP server and client
Details:
USN-3586-1 fixed a vulnerability in DHCP. This update provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
Felix Wilhelm discovered that the DHCP client incorrectly handled certain malformed responses. A remote attacker could use this issue to cause the DHCP client to crash, resulting in a denial of service, or possibly execute arbitrary code. In the default installation, attackers would be isolated by the dhclient AppArmor profile. (CVE-2018-5732)
Felix Wilhelm discovered that the DHCP server incorrectly handled reference counting. A remote attacker could possibly use this issue to cause the DHCP server to crash, resulting in a denial of service. (CVE-2018-5733)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 12.04 ESM: isc-dhcp-client 4.1.ESV-R4-0ubuntu5.13 isc-dhcp-relay 4.1.ESV-R4-0ubuntu5.13 isc-dhcp-server 4.1.ESV-R4-0ubuntu5.13 isc-dhcp-server-ldap 4.1.ESV-R4-0ubuntu5.13
In general, a standard system update will make all the necessary changes.
References: https://usn.ubuntu.com/usn/usn-3586-2 https://usn.ubuntu.com/usn/usn-3586-1 CVE-2018-5732, CVE-2018-5733 --=-goYMbjZsmeeKzZt4liLV Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit
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