USN-5308-1

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Source
https://ubuntu.com/security/notices/USN-5308-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5308-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-5308-1
Related
Published
2022-03-07T23:47:01.471552Z
Modified
2022-03-07T23:47:01.471552Z
Summary
libssh2 vulnerabilities
Details

It was discovered that libssh2 mishandled certain input. If libssh2 were used to connect to a malicious or compromised SSH server, a remote, unauthenticated attacker could possibly execute arbitrary code on the client system. (CVE-2019-3855)

It was discovered that libssh2 incorrectly handled prompt requests. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2019-3856)

It was discovered that libssh2 incorrectly handled SSHMSGCHANNEL_REQUEST packets. A remote attacker could possibly use this issue to execute arbitrary code, cause a denial of service, or obtain sensitive information. (CVE-2019-3857, CVE-2019-3862)

It was discovered that libssh2 incorrectly handled specially crafted SFTP packets. A remote attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2019-3858)

It was discovered that libssh2 incorrectly handled certain specially crafted packets. A remote attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2019-3859)

It was discovered that libssh2 incorrectly handled SFTP packets with empty payloads. A remote attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2019-3860)

It was discovered that libssh2 incorrectly handled padding values in SSH packets. A remote attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2019-3861)

It was discovered that libssh2 incorrectly handled interactive response messages length. A remote attacker could possibly use this issue to execute arbitrary code. (CVE-2019-3863)

It was discovered that libssh2 incorrectly handled the Diffie Hellman key exchange. A remote attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2019-13115)

It was discovered that libssh2 incorrectly handled bound checks in SSHMSGDISCONNECT. A remote attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2019-17498)

References

Affected packages

Ubuntu:Pro:16.04:LTS / libssh2

Package

Name
libssh2
Purl
pkg:deb/ubuntu/libssh2@1.5.0-2ubuntu0.1+esm1?arch=src?distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5.0-2ubuntu0.1+esm1

Affected versions

1.*

1.5.0-2
1.5.0-2ubuntu0.1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "libssh2-1": "1.5.0-2ubuntu0.1+esm1",
            "libssh2-1-dbgsym": "1.5.0-2ubuntu0.1+esm1",
            "libssh2-1-dev-dbgsym": "1.5.0-2ubuntu0.1+esm1",
            "libssh2-1-dbg": "1.5.0-2ubuntu0.1+esm1",
            "libssh2-1-dev": "1.5.0-2ubuntu0.1+esm1"
        }
    ]
}