UBUNTU-CVE-2020-10702

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Source
https://ubuntu.com/security/notices/UBUNTU-CVE-2020-10702
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10702.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-10702
Related
Published
2020-04-13T00:00:00Z
Modified
2020-04-13T00:00:00Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

A flaw was found in QEMU in the implementation of the Pointer Authentication (PAuth) support for ARM introduced in version 4.0 and fixed in version 5.0.0. A general failure of the signature generation process caused every PAuth-enforced pointer to be signed with the same signature. A local attacker could obtain the signature of a protected pointer and abuse this flaw to bypass PAuth protection for all programs running on QEMU.

References

Affected packages

Ubuntu:20.04:LTS / qemu

Package

Name
qemu
Purl
pkg:deb/ubuntu/qemu@1:4.2-3ubuntu5?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:4.2-3ubuntu5

Affected versions

1:4.*

1:4.0+dfsg-0ubuntu9
1:4.0+dfsg-0ubuntu10
1:4.2-1ubuntu1
1:4.2-1ubuntu2
1:4.2-3ubuntu1
1:4.2-3ubuntu2
1:4.2-3ubuntu3
1:4.2-3ubuntu4

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "qemu-system-misc": "1:4.2-3ubuntu5",
            "qemu-guest-agent-dbgsym": "1:4.2-3ubuntu5",
            "qemu-block-extra-dbgsym": "1:4.2-3ubuntu5",
            "qemu-utils-dbgsym": "1:4.2-3ubuntu5",
            "qemu-user": "1:4.2-3ubuntu5",
            "qemu-system-x86-microvm": "1:4.2-3ubuntu5",
            "qemu-kvm": "1:4.2-3ubuntu5",
            "qemu-system-arm-dbgsym": "1:4.2-3ubuntu5",
            "qemu-system-ppc-dbgsym": "1:4.2-3ubuntu5",
            "qemu-user-static": "1:4.2-3ubuntu5",
            "qemu-system-arm": "1:4.2-3ubuntu5",
            "qemu": "1:4.2-3ubuntu5",
            "qemu-system-x86-xen": "1:4.2-3ubuntu5",
            "qemu-system-sparc": "1:4.2-3ubuntu5",
            "qemu-system-data": "1:4.2-3ubuntu5",
            "qemu-system-common-dbgsym": "1:4.2-3ubuntu5",
            "qemu-system-s390x-dbgsym": "1:4.2-3ubuntu5",
            "qemu-system-x86-dbgsym": "1:4.2-3ubuntu5",
            "qemu-system": "1:4.2-3ubuntu5",
            "qemu-guest-agent": "1:4.2-3ubuntu5",
            "qemu-utils": "1:4.2-3ubuntu5",
            "qemu-system-x86-xen-dbgsym": "1:4.2-3ubuntu5",
            "qemu-block-extra": "1:4.2-3ubuntu5",
            "qemu-system-misc-dbgsym": "1:4.2-3ubuntu5",
            "qemu-system-sparc-dbgsym": "1:4.2-3ubuntu5",
            "qemu-system-mips-dbgsym": "1:4.2-3ubuntu5",
            "qemu-system-x86": "1:4.2-3ubuntu5",
            "qemu-system-ppc": "1:4.2-3ubuntu5",
            "qemu-system-s390x": "1:4.2-3ubuntu5",
            "qemu-system-x86-microvm-dbgsym": "1:4.2-3ubuntu5",
            "qemu-system-common": "1:4.2-3ubuntu5",
            "qemu-system-gui-dbgsym": "1:4.2-3ubuntu5",
            "qemu-user-static-dbgsym": "1:4.2-3ubuntu5",
            "qemu-system-mips": "1:4.2-3ubuntu5",
            "qemu-system-gui": "1:4.2-3ubuntu5",
            "qemu-user-binfmt": "1:4.2-3ubuntu5",
            "qemu-user-dbgsym": "1:4.2-3ubuntu5"
        }
    ]
}