USN-4246-1

It was discovered that zlib incorrectly handled pointer arithmetic. An attacker could use this issue to cause zlib to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-9840, CVE-2016-9841)

It was discovered that zlib incorrectly handled vectors involving left shifts of negative integers. An attacker could use this issue to cause zlib to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-9842)

It was discovered that zlib incorrectly handled vectors involving big-endian CRC calculation. An attacker could use this issue to cause zlib to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2016-9843)

References

Affected packages

Ubuntu:16.04:LTS / zlib

Package

Name: zlib
Purl: pkg:deb/ubuntu/zlib@1:1.2.8.dfsg-2ubuntu4.3?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:1.2.8.dfsg-2ubuntu4.3

Affected versions

1:1.*

1:1.2.8.dfsg-2ubuntu4

1:1.2.8.dfsg-2ubuntu4.1

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "1:1.2.8.dfsg-2ubuntu4.3",
            "binary_name": "lib32z1"
        },
        {
            "binary_version": "1:1.2.8.dfsg-2ubuntu4.3",
            "binary_name": "lib32z1-dev"
        },
        {
            "binary_version": "1:1.2.8.dfsg-2ubuntu4.3",
            "binary_name": "lib64z1"
        },
        {
            "binary_version": "1:1.2.8.dfsg-2ubuntu4.3",
            "binary_name": "lib64z1-dev"
        },
        {
            "binary_version": "1:1.2.8.dfsg-2ubuntu4.3",
            "binary_name": "libx32z1"
        },
        {
            "binary_version": "1:1.2.8.dfsg-2ubuntu4.3",
            "binary_name": "libx32z1-dev"
        },
        {
            "binary_version": "1:1.2.8.dfsg-2ubuntu4.3",
            "binary_name": "zlib1g"
        },
        {
            "binary_version": "1:1.2.8.dfsg-2ubuntu4.3",
            "binary_name": "zlib1g-dev"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2016-9840"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2016-9841"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2016-9842"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "low",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2016-9843"
        }
    ],
    "ecosystem": "Ubuntu:16.04:LTS"
}