7.4 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
6.9 Medium
AI Score
Confidence
High
5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
0.007 Low
EPSS
Percentile
80.2%
The remote host is missing an update for the
# SPDX-FileCopyrightText: 2021 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("1.3.6.1.4.1.25623.1.0.845008");
script_cve_id("CVE-2021-31799", "CVE-2021-31810", "CVE-2021-32066");
script_tag(name:"creation_date", value:"2021-07-22 03:00:29 +0000 (Thu, 22 Jul 2021)");
script_version("2024-02-02T05:06:08+0000");
script_tag(name:"last_modification", value:"2024-02-02 05:06:08 +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:H/PR:N/UI:N/S:U/C:H/I:H/A:N");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2021-08-10 13:03:57 +0000 (Tue, 10 Aug 2021)");
script_name("Ubuntu: Security Advisory (USN-5020-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2021 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=UBUNTU(16\.04\ LTS|18\.04\ LTS|20\.04\ LTS|20\.10|21\.04)");
script_xref(name:"Advisory-ID", value:"USN-5020-1");
script_xref(name:"URL", value:"https://ubuntu.com/security/notices/USN-5020-1");
script_tag(name:"summary", value:"The remote host is missing an update for the 'ruby2.3, ruby2.5, ruby2.7' package(s) announced via the USN-5020-1 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 Ruby incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
(CVE-2021-31799)
It was discovered that Ruby incorrectly handled certain inputs.
An attacker could possibly use this issue to conduct
port scans and service banner extractions. This issue only affected
Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. (CVE-2021-31810)
It was discovered that Ruby incorrectly handled certain inputs.
An attacker could possibly use this issue to perform
machine-in-the-middle attackers to bypass the TLS protection.
(CVE-2021-32066)");
script_tag(name:"affected", value:"'ruby2.3, ruby2.5, ruby2.7' package(s) on Ubuntu 16.04, Ubuntu 18.04, Ubuntu 20.04, Ubuntu 20.10, Ubuntu 21.04.");
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:"libruby2.3", ver:"2.3.1-2~ubuntu16.04.16+esm1", rls:"UBUNTU16.04 LTS"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ruby2.3", ver:"2.3.1-2~ubuntu16.04.16+esm1", rls:"UBUNTU16.04 LTS"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
if(release == "UBUNTU18.04 LTS") {
if(!isnull(res = isdpkgvuln(pkg:"libruby2.5", ver:"2.5.1-1ubuntu1.10", rls:"UBUNTU18.04 LTS"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ruby2.5", ver:"2.5.1-1ubuntu1.10", rls:"UBUNTU18.04 LTS"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
if(release == "UBUNTU20.04 LTS") {
if(!isnull(res = isdpkgvuln(pkg:"libruby2.7", ver:"2.7.0-5ubuntu1.5", rls:"UBUNTU20.04 LTS"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ruby2.7", ver:"2.7.0-5ubuntu1.5", rls:"UBUNTU20.04 LTS"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
if(release == "UBUNTU20.10") {
if(!isnull(res = isdpkgvuln(pkg:"libruby2.7", ver:"2.7.1-3ubuntu1.4", rls:"UBUNTU20.10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ruby2.7", ver:"2.7.1-3ubuntu1.4", rls:"UBUNTU20.10"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
if(release == "UBUNTU21.04") {
if(!isnull(res = isdpkgvuln(pkg:"libruby2.7", ver:"2.7.2-4ubuntu1.2", rls:"UBUNTU21.04"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"ruby2.7", ver:"2.7.2-4ubuntu1.2", rls:"UBUNTU21.04"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
7.4 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
6.9 Medium
AI Score
Confidence
High
5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
0.007 Low
EPSS
Percentile
80.2%