drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Mehrere Probleme in QEMU (Aktualisierung)
Name: |
Mehrere Probleme in QEMU (Aktualisierung) |
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ID: |
USN-3575-2 |
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Distribution: |
Ubuntu |
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Plattformen: |
Ubuntu 14.04 LTS, Ubuntu 16.04 LTS |
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Datum: |
Mo, 5. März 2018, 14:37 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15124
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5683
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15289
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-16845
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15119
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15118
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18043
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11334
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15268
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15038
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14167
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-13672
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17381 |
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Applikationen: |
QEMU |
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Update von: |
Mehrere Probleme in QEMU |
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Originalnachricht |
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --===============0633312232006018373== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="2cp2HgEhXifjlZFPNv7OOVWJpkIBF3Z8J"
This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --2cp2HgEhXifjlZFPNv7OOVWJpkIBF3Z8J Content-Type: multipart/mixed; boundary="QBVXvfBnpeKL4LANUHGZhkql7pqmd8Rgf"; protected-headers="v1" From: Marc Deslauriers <marc.deslauriers@canonical.com> Reply-To: Ubuntu Security <security@ubuntu.com> To: ubuntu-security-announce@lists.ubuntu.com Message-ID: <1757ff29-9360-8c20-d243-337a7d3c3329@canonical.com> Subject: [USN-3575-2] QEMU regression
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========================================================================== Ubuntu Security Notice USN-3575-2 March 05, 2018
qemu regression ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 LTS - Ubuntu 14.04 LTS
Summary:
USN-3575-1 introduced a regression in QEMU.
Software Description: - qemu: Machine emulator and virtualizer
Details:
USN-3575-1 fixed vulnerabilities in QEMU. The fix for CVE-2017-11334 caused a regression in Xen environments. This update removes the problematic fix pending further investigation.
We apologize for the inconvenience.
Original advisory details:
It was discovered that QEMU incorrectly handled guest ram. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-11334) David Buchanan discovered that QEMU incorrectly handled the VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. (CVE-2017-13672) Thomas Garnier discovered that QEMU incorrectly handled multiboot. An attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-14167) Tuomas Tynkkynen discovered that QEMU incorrectly handled VirtFS directory sharing. An attacker could use this issue to obtain sensitive information from host memory. (CVE-2017-15038) Eric Blake discovered that QEMU incorrectly handled memory in the NBD server. An attacker could use this issue to cause the NBD server to crash, resulting in a denial of service. This issue only affected Ubuntu 17.10. (CVE-2017-15118) Eric Blake discovered that QEMU incorrectly handled certain options to the NBD server. An attacker could use this issue to cause the NBD server to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-15119) Daniel Berrange discovered that QEMU incorrectly handled the VNC server. A remote attacker could possibly use this issue to consume memory, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. (CVE-2017-15124) Carl Brassey discovered that QEMU incorrectly handled certain websockets. A remote attacker could possibly use this issue to consume memory, resulting in a denial of service. This issue only affected Ubuntu 17.10. (CVE-2017-15268) Guoxiang Niu discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-15289) Cyrille Chatras discovered that QEMU incorrectly handled certain PS2 values during migration. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-16845) It was discovered that QEMU incorrectly handled the Virtio Vring implementation. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2017-17381) Eric Blake discovered that QEMU incorrectly handled certain rounding operations. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-18043) Jiang Xin and Lin ZheCheng discovered that QEMU incorrectly handled the VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2018-5683)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04 LTS: qemu 1:2.5+dfsg-5ubuntu10.24
Ubuntu 14.04 LTS: qemu 2.0.0+dfsg-2ubuntu1.40
After a standard system update you need to restart all QEMU virtual machines to make all the necessary changes.
References: https://usn.ubuntu.com/usn/usn-3575-2 https://usn.ubuntu.com/usn/usn-3575-1 https://launchpad.net/bugs/1752761
Package Information: https://launchpad.net/ubuntu/+source/qemu/1:2.5+dfsg-5ubuntu10.24 https://launchpad.net/ubuntu/+source/qemu/2.0.0+dfsg-2ubuntu1.40
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