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("1.3.6.1.4.1.25623.1.1.12.2023.5965.1");
script_cve_id("CVE-2020-26117");
script_tag(name:"creation_date", value:"2023-03-21 04:11:23 +0000 (Tue, 21 Mar 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:"5.8");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:N");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2020-10-15 17:43:00 +0000 (Thu, 15 Oct 2020)");
script_name("Ubuntu: Security Advisory (USN-5965-1)");
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=UBUNTU20\.04\ LTS");
script_xref(name:"Advisory-ID", value:"USN-5965-1");
script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-5965-1");
script_tag(name:"summary", value:"The remote host is missing an update for the 'tigervnc' package(s) announced via the USN-5965-1 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 TigerVNC mishandled TLS certificate exceptions. An
attacker could use this vulnerability to impersonate any server after a client
had added an exception and obtain sensitive information.");
script_tag(name:"affected", value:"'tigervnc' package(s) on Ubuntu 20.04.");
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 == "UBUNTU20.04 LTS") {
if(!isnull(res = isdpkgvuln(pkg:"tigervnc-common", ver:"1.10.1+dfsg-3ubuntu0.1+esm2", rls:"UBUNTU20.04 LTS"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"tigervnc-scraping-server", ver:"1.10.1+dfsg-3ubuntu0.1+esm2", rls:"UBUNTU20.04 LTS"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"tigervnc-standalone-server", ver:"1.10.1+dfsg-3ubuntu0.1+esm2", rls:"UBUNTU20.04 LTS"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);