CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
25.0%
The remote host is missing an update for the Debian
# 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("1.3.6.1.4.1.25623.1.1.1.2.2023.3442");
script_cve_id("CVE-2021-32862");
script_tag(name:"creation_date", value:"2023-06-05 04:21:35 +0000 (Mon, 05 Jun 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:"5.5");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:N");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2022-08-20 01:34:58 +0000 (Sat, 20 Aug 2022)");
script_name("Debian: Security Advisory (DLA-3442-1)");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2023 Greenbone AG");
script_family("Debian Local Security Checks");
script_dependencies("gather-package-list.nasl");
script_mandatory_keys("ssh/login/debian_linux", "ssh/login/packages", re:"ssh/login/release=DEB10");
script_xref(name:"Advisory-ID", value:"DLA-3442-1");
script_xref(name:"URL", value:"https://www.debian.org/lts/security/2023/DLA-3442-1");
script_xref(name:"URL", value:"https://security-tracker.debian.org/tracker/nbconvert");
script_xref(name:"URL", value:"https://wiki.debian.org/LTS");
script_tag(name:"summary", value:"The remote host is missing an update for the Debian 'nbconvert' package(s) announced via the DLA-3442-1 advisory.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable package version is present on the target host.");
script_tag(name:"insight", value:"Alvaro Munoz from the GitHub Security Lab discovered sixteen ways to exploit a cross-site scripting vulnerability in nbconvert, a tool and library used to convert notebooks to various other formats via Jinja templates.
When using nbconvert to generate an HTML version of a user-controllable notebook, it is possible to inject arbitrary HTML which may lead to cross-site scripting (XSS) vulnerabilities if these HTML notebooks are served by a web server without tight Content-Security-Policy (e.g., nbviewer).
GHSL-2021-1013: XSS in notebook.metadata.language_info.pygments_lexer,
GHSL-2021-1014: XSS in notebook.metadata.title,
GHSL-2021-1015: XSS in notebook.metadata.widgets,
GHSL-2021-1016: XSS in notebook.cell.metadata.tags,
GHSL-2021-1017: XSS in output data text/html cells,
GHSL-2021-1018: XSS in output data image/svg+xml cells,
GHSL-2021-1019: XSS in notebook.cell.output.svg_filename,
GHSL-2021-1020: XSS in output data text/markdown cells,
GHSL-2021-1021: XSS in output data application/javascript cells,
GHSL-2021-1022: XSS in output.metadata.filenames image/png and image/jpeg,
GHSL-2021-1023: XSS in output data image/png and image/jpeg cells,
GHSL-2021-1024: XSS in output.metadata.width/height image/png and image/jpeg,
GHSL-2021-1025: XSS in output data application/vnd.jupyter.widget-state+json cells,
GHSL-2021-1026: XSS in output data application/vnd.jupyter.widget-view+json cells,
GHSL-2021-1027: XSS in raw cells, and
GHSL-2021-1028: XSS in markdown cells.
Some of these vulnerabilities, namely GHSL-2021-1017, -1020, -1021 and -1028, are actually design decisions where text/html, text/markdown, application/javascript and markdown cells should allow for arbitrary JavaScript code execution. These vulnerabilities are therefore left open by default, but users can now opt-out and strip down all JavaScript elements via a new HTMLExporter option sanitize_html.
For Debian 10 buster, this problem has been fixed in version 5.4-2+deb10u1.
We recommend that you upgrade your nbconvert packages.
For the detailed security status of nbconvert please refer to its security tracker page at: [link moved to references]
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: [link moved to references]");
script_tag(name:"affected", value:"'nbconvert' package(s) on Debian 10.");
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 == "DEB10") {
if(!isnull(res = isdpkgvuln(pkg:"jupyter-nbconvert", ver:"5.4-2+deb10u1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"python-nbconvert", ver:"5.4-2+deb10u1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"python-nbconvert-doc", ver:"5.4-2+deb10u1", rls:"DEB10"))) {
report += res;
}
if(!isnull(res = isdpkgvuln(pkg:"python3-nbconvert", ver:"5.4-2+deb10u1", rls:"DEB10"))) {
report += res;
}
if(report != "") {
security_message(data:report);
} else if(__pkg_match) {
exit(99);
}
exit(0);
}
exit(0);
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
25.0%