UBUNTU-CVE-2020-6096

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Source

https://ubuntu.com/security/notices/UBUNTU-CVE-2020-6096

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-6096.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-6096

Related

Published

2020-04-01T22:15:00Z

Modified

2020-04-01T22:15:00Z

Severity

8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

An exploitable signed comparison vulnerability exists in the ARMv7 memcpy() implementation of GNU glibc 2.30.9000. Calling memcpy() (on ARMv7 targets that utilize the GNU glibc implementation) with a negative value for the 'num' parameter results in a signed comparison vulnerability. If an attacker underflows the 'num' parameter to memcpy(), this vulnerability could lead to undefined behavior such as writing to out-of-bounds memory and potentially remote code execution. Furthermore, this memcpy() implementation allows for program execution to continue in scenarios where a segmentation fault or crash should have occurred. The dangers occur in that subsequent execution and iterations of this code will be executed with this corrupted data.

References

Affected packages

Ubuntu:Pro:14.04:LTS / eglibc

Package

Name: eglibc

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.17-93ubuntu4

2.18-0ubuntu1

2.18-0ubuntu2

2.18-0ubuntu4

2.18-0ubuntu5

2.18-0ubuntu6

2.18-0ubuntu7

2.19-0ubuntu2

2.19-0ubuntu3

2.19-0ubuntu4

2.19-0ubuntu5

2.19-0ubuntu6

2.19-0ubuntu6.1

2.19-0ubuntu6.3

2.19-0ubuntu6.4

2.19-0ubuntu6.5

2.19-0ubuntu6.6

2.19-0ubuntu6.7

2.19-0ubuntu6.8

2.19-0ubuntu6.9

2.19-0ubuntu6.10

2.19-0ubuntu6.11

2.19-0ubuntu6.13

2.19-0ubuntu6.14

2.19-0ubuntu6.15

2.19-0ubuntu6.15+esm1

2.19-0ubuntu6.15+esm2

2.19-0ubuntu6.15+esm3

Ecosystem specific

{
    "ubuntu_priority": "low"
}

Ubuntu:16.04:LTS / glibc

Package

Name: glibc
Purl: pkg:deb/ubuntu/glibc@2.23-0ubuntu11.3?arch=src?distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.23-0ubuntu11.3

Affected versions

2.*

2.21-0ubuntu4

2.21-0ubuntu5

2.21-0ubuntu6

2.23-0ubuntu1

2.23-0ubuntu2

2.23-0ubuntu3

2.23-0ubuntu4

2.23-0ubuntu5

2.23-0ubuntu6

2.23-0ubuntu7

2.23-0ubuntu9

2.23-0ubuntu10

2.23-0ubuntu11

2.23-0ubuntu11.2

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "libc6-s390-dbgsym": "2.23-0ubuntu11.3",
            "libc6-dev": "2.23-0ubuntu11.3",
            "libc6-udeb-dbgsym": "2.23-0ubuntu11.3",
            "multiarch-support": "2.23-0ubuntu11.3",
            "libc6-ppc64": "2.23-0ubuntu11.3",
            "libc6-dev-s390": "2.23-0ubuntu11.3",
            "libc6-dev-i386": "2.23-0ubuntu11.3",
            "locales-all": "2.23-0ubuntu11.3",
            "libc6-amd64-dbgsym": "2.23-0ubuntu11.3",
            "glibc-source": "2.23-0ubuntu11.3",
            "libc6-dev-amd64": "2.23-0ubuntu11.3",
            "libc6-pic": "2.23-0ubuntu11.3",
            "nscd-dbgsym": "2.23-0ubuntu11.3",
            "nscd": "2.23-0ubuntu11.3",
            "glibc-doc": "2.23-0ubuntu11.3",
            "libc6-ppc64-dbgsym": "2.23-0ubuntu11.3",
            "libc6-armel": "2.23-0ubuntu11.3",
            "libc6-dbg": "2.23-0ubuntu11.3",
            "libc6": "2.23-0ubuntu11.3",
            "libc6-armel-dbgsym": "2.23-0ubuntu11.3",
            "libc-bin": "2.23-0ubuntu11.3",
            "libc6-i386": "2.23-0ubuntu11.3",
            "libc6-udeb": "2.23-0ubuntu11.3",
            "libc6-dev-x32": "2.23-0ubuntu11.3",
            "libc-bin-dbgsym": "2.23-0ubuntu11.3",
            "libc-dev-bin": "2.23-0ubuntu11.3",
            "libc6-amd64": "2.23-0ubuntu11.3",
            "libc6-x32": "2.23-0ubuntu11.3",
            "libc6-dbgsym": "2.23-0ubuntu11.3",
            "libc6-s390": "2.23-0ubuntu11.3",
            "libc6-dev-armel": "2.23-0ubuntu11.3",
            "libc6-dev-ppc64": "2.23-0ubuntu11.3",
            "libc6-i386-dbgsym": "2.23-0ubuntu11.3",
            "locales": "2.23-0ubuntu11.3",
            "libc-dev-bin-dbgsym": "2.23-0ubuntu11.3",
            "libc6-x32-dbgsym": "2.23-0ubuntu11.3"
        }
    ]
}

Ubuntu:18.04:LTS / glibc

Package

Name: glibc
Purl: pkg:deb/ubuntu/glibc@2.27-3ubuntu1.5?arch=src?distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.27-3ubuntu1.5

Affected versions

2.*

2.26-0ubuntu2

2.26-0ubuntu2.1

2.27-0ubuntu2

2.27-0ubuntu3

2.27-3ubuntu1

2.27-3ubuntu1.2

2.27-3ubuntu1.3

2.27-3ubuntu1.4

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "libc6-s390-dbgsym": "2.27-3ubuntu1.5",
            "libc6-dev": "2.27-3ubuntu1.5",
            "multiarch-support": "2.27-3ubuntu1.5",
            "libc6-dev-s390": "2.27-3ubuntu1.5",
            "libc6-dev-i386": "2.27-3ubuntu1.5",
            "locales-all": "2.27-3ubuntu1.5",
            "libc6-amd64-dbgsym": "2.27-3ubuntu1.5",
            "libc6-pic": "2.27-3ubuntu1.5",
            "glibc-source": "2.27-3ubuntu1.5",
            "libc6-dev-amd64": "2.27-3ubuntu1.5",
            "nscd-dbgsym": "2.27-3ubuntu1.5",
            "nscd": "2.27-3ubuntu1.5",
            "glibc-doc": "2.27-3ubuntu1.5",
            "libc6-armel": "2.27-3ubuntu1.5",
            "libc6-armel-dbgsym": "2.27-3ubuntu1.5",
            "libc6": "2.27-3ubuntu1.5",
            "libc6-dbg": "2.27-3ubuntu1.5",
            "libc-bin": "2.27-3ubuntu1.5",
            "libc6-i386": "2.27-3ubuntu1.5",
            "libc6-udeb": "2.27-3ubuntu1.5",
            "libc6-dev-x32": "2.27-3ubuntu1.5",
            "libc-bin-dbgsym": "2.27-3ubuntu1.5",
            "libc-dev-bin": "2.27-3ubuntu1.5",
            "libc6-amd64": "2.27-3ubuntu1.5",
            "libc6-x32": "2.27-3ubuntu1.5",
            "libc6-s390": "2.27-3ubuntu1.5",
            "libc6-dev-armel": "2.27-3ubuntu1.5",
            "libc6-i386-dbgsym": "2.27-3ubuntu1.5",
            "locales": "2.27-3ubuntu1.5",
            "libc6-lse": "2.27-3ubuntu1.5",
            "libc-dev-bin-dbgsym": "2.27-3ubuntu1.5",
            "libc6-x32-dbgsym": "2.27-3ubuntu1.5"
        }
    ]
}

Ubuntu:20.04:LTS / glibc

Package

Name: glibc
Purl: pkg:deb/ubuntu/glibc@2.31-0ubuntu9.7?arch=src?distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.31-0ubuntu9.7

Affected versions

2.*

2.30-0ubuntu2

2.30-0ubuntu3

2.31-0ubuntu5

2.31-0ubuntu6

2.31-0ubuntu7

2.31-0ubuntu9

2.31-0ubuntu9.1

2.31-0ubuntu9.2

2.31-0ubuntu9.3

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "libc6-s390-dbgsym": "2.31-0ubuntu9.7",
            "libc6-dev": "2.31-0ubuntu9.7",
            "libc6-dev-s390": "2.31-0ubuntu9.7",
            "libc6-dev-i386": "2.31-0ubuntu9.7",
            "locales-all": "2.31-0ubuntu9.7",
            "libc6-amd64-dbgsym": "2.31-0ubuntu9.7",
            "libc6-pic": "2.31-0ubuntu9.7",
            "glibc-source": "2.31-0ubuntu9.7",
            "libc6-dev-amd64": "2.31-0ubuntu9.7",
            "nscd-dbgsym": "2.31-0ubuntu9.7",
            "nscd": "2.31-0ubuntu9.7",
            "glibc-doc": "2.31-0ubuntu9.7",
            "libc6-armel": "2.31-0ubuntu9.7",
            "libc6-armel-dbgsym": "2.31-0ubuntu9.7",
            "libc6": "2.31-0ubuntu9.7",
            "libc6-dbg": "2.31-0ubuntu9.7",
            "libc-bin": "2.31-0ubuntu9.7",
            "libc6-i386": "2.31-0ubuntu9.7",
            "libc6-udeb": "2.31-0ubuntu9.7",
            "libc6-dev-x32": "2.31-0ubuntu9.7",
            "libc-bin-dbgsym": "2.31-0ubuntu9.7",
            "libc-dev-bin": "2.31-0ubuntu9.7",
            "libc6-amd64": "2.31-0ubuntu9.7",
            "libc6-x32": "2.31-0ubuntu9.7",
            "libc6-prof": "2.31-0ubuntu9.7",
            "libc6-s390": "2.31-0ubuntu9.7",
            "libc6-dev-armel": "2.31-0ubuntu9.7",
            "libc6-i386-dbgsym": "2.31-0ubuntu9.7",
            "locales": "2.31-0ubuntu9.7",
            "libc6-lse": "2.31-0ubuntu9.7",
            "libc-dev-bin-dbgsym": "2.31-0ubuntu9.7",
            "libc6-x32-dbgsym": "2.31-0ubuntu9.7"
        }
    ]
}