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💡 Newskategorie: Unix Server
🔗 Quelle: usn.ubuntu.com
qemu vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 19.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary
Several security issues were fixed in QEMU.
Software Description
- qemu - Machine emulator and virtualizer
Details
It was discovered that QEMU incorrectly handled bochs-display devices. A local attacker in a guest could use this to cause a denial of service or possibly execute arbitrary code in the host. This issue only affected Ubuntu 19.10. (CVE-2019-15034)
It was discovered that QEMU incorrectly handled memory during certain VNC operations. A remote attacker could possibly use this issue to cause QEMU to consume resources, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 19.10. (CVE-2019-20382)
It was discovered that QEMU incorrectly generated QEMU Pointer Authentication signatures on ARM. A local attacker could possibly use this issue to bypass PAuth. This issue only affected Ubuntu 19.10. (CVE-2020-10702)
Ziming Zhang discovered that QEMU incorrectly handled ATI VGA emulation. A local attacker in a guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS. (CVE-2020-11869)
Aviv Sasson discovered that QEMU incorrectly handled Slirp networking. A remote attacker could 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, Ubuntu 18.04 LTS, and Ubuntu 19.10. (CVE-2020-1983)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 20.04 LTS
- qemu - 1:4.2-3ubuntu6.1
- qemu-system - 1:4.2-3ubuntu6.1
- qemu-system-arm - 1:4.2-3ubuntu6.1
- qemu-system-mips - 1:4.2-3ubuntu6.1
- qemu-system-ppc - 1:4.2-3ubuntu6.1
- qemu-system-s390x - 1:4.2-3ubuntu6.1
- qemu-system-sparc - 1:4.2-3ubuntu6.1
- qemu-system-x86 - 1:4.2-3ubuntu6.1
- Ubuntu 19.10
- qemu - 1:4.0+dfsg-0ubuntu9.6
- qemu-system - 1:4.0+dfsg-0ubuntu9.6
- qemu-system-arm - 1:4.0+dfsg-0ubuntu9.6
- qemu-system-mips - 1:4.0+dfsg-0ubuntu9.6
- qemu-system-ppc - 1:4.0+dfsg-0ubuntu9.6
- qemu-system-s390x - 1:4.0+dfsg-0ubuntu9.6
- qemu-system-sparc - 1:4.0+dfsg-0ubuntu9.6
- qemu-system-x86 - 1:4.0+dfsg-0ubuntu9.6
- Ubuntu 18.04 LTS
- qemu - 1:2.11+dfsg-1ubuntu7.26
- qemu-system - 1:2.11+dfsg-1ubuntu7.26
- qemu-system-arm - 1:2.11+dfsg-1ubuntu7.26
- qemu-system-mips - 1:2.11+dfsg-1ubuntu7.26
- qemu-system-ppc - 1:2.11+dfsg-1ubuntu7.26
- qemu-system-s390x - 1:2.11+dfsg-1ubuntu7.26
- qemu-system-sparc - 1:2.11+dfsg-1ubuntu7.26
- qemu-system-x86 - 1:2.11+dfsg-1ubuntu7.26
- Ubuntu 16.04 LTS
- qemu - 1:2.5+dfsg-5ubuntu10.44
- qemu-system - 1:2.5+dfsg-5ubuntu10.44
- qemu-system-aarch64 - 1:2.5+dfsg-5ubuntu10.44
- qemu-system-arm - 1:2.5+dfsg-5ubuntu10.44
- qemu-system-mips - 1:2.5+dfsg-5ubuntu10.44
- qemu-system-ppc - 1:2.5+dfsg-5ubuntu10.44
- qemu-system-s390x - 1:2.5+dfsg-5ubuntu10.44
- qemu-system-sparc - 1:2.5+dfsg-5ubuntu10.44
- qemu-system-x86 - 1:2.5+dfsg-5ubuntu10.44
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart all QEMU virtual machines to make all the necessary changes.