9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9.2 High
AI Score
Confidence
High
9.3 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.046 Low
EPSS
Percentile
92.5%
The remote host is missing an update for the
# SPDX-FileCopyrightText: 2023 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.1.12.2022.5308.1");
script_cve_id("CVE-2019-13115", "CVE-2019-17498", "CVE-2019-3855", "CVE-2019-3856", "CVE-2019-3857", "CVE-2019-3858", "CVE-2019-3859", "CVE-2019-3860", "CVE-2019-3861", "CVE-2019-3862", "CVE-2019-3863");
script_tag(name:"creation_date", value:"2023-01-27 04:10:43 +0000 (Fri, 27 Jan 2023)");
script_version("2024-02-02T05:06:10+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:10 +0000 (Fri, 02 Feb 2024)");
script_tag(name:"cvss_base", value:"9.3");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2019-03-26 14:10:46 +0000 (Tue, 26 Mar 2019)");
script_name("Ubuntu: Security Advisory (USN-5308-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2023 Greenbone AG");
script_family("Ubuntu Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/ubuntu_linux", "ssh/login/packages", re:"ssh/login/release=UBUNTU16\.04\ LTS");
script_xref(name:"Advisory-ID", value:"USN-5308-1");
script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-5308-1");
script_tag(name:"summary", value:"The remote host is missing an update for the 'libssh2' package(s) announced via the USN-5308-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"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 SSH_MSG_CHANNEL_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
SSH_MSG_DISCONNECT. A remote attacker could possibly use this issue to
cause a denial of service or obtain sensitive information. (CVE-2019-17498)");
script_tag(name:"affected", value:"'libssh2' package(s) on Ubuntu 16.04.");
script_tag(name:"solution", value:"Please install the updated package(s).");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"package");
exit(0);
}
include("revisions-lib.inc");
include("pkg-lib-deb.inc");
release = dpkg_get_ssh_release();
if(!release)
exit(0);
res = "";
report = "";
if(release == "UBUNTU16.04 LTS") {
if(!isnull(res = isdpkgvuln(pkg:"libssh2-1", ver:"1.5.0-2ubuntu0.1+esm1", rls:"UBUNTU16.04 LTS"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9.2 High
AI Score
Confidence
High
9.3 High
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
0.046 Low
EPSS
Percentile
92.5%