USN-4327-1

Yasheng Yang discovered that libssh incorrectly handled AES-CTR ciphers. A remote attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:18.04:LTS / libssh

Package

Name: libssh
Purl: pkg:deb/ubuntu/libssh@0.8.0~20170825.94fa1e38-1ubuntu0.6?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.8.0~20170825.94fa1e38-1ubuntu0.6

Affected versions

0.*

0.7.5-1

0.8.0~20170825.94fa1e38-1

0.8.0~20170825.94fa1e38-1build1

0.8.0~20170825.94fa1e38-1ubuntu0.1

0.8.0~20170825.94fa1e38-1ubuntu0.2

0.8.0~20170825.94fa1e38-1ubuntu0.5

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libssh-4",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.6"
        },
        {
            "binary_name": "libssh-dev",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.6"
        },
        {
            "binary_name": "libssh-gcrypt-4",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.6"
        },
        {
            "binary_name": "libssh-gcrypt-dev",
            "binary_version": "0.8.0~20170825.94fa1e38-1ubuntu0.6"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-1730",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:18.04:LTS"
}