The remote host is affected by the vulnerability described in GLSA-202305-11 (Tor: Multiple Vulnerabilities)
Tor before 0.3.5.16, 0.4.5.10, and 0.4.6.7 mishandles the relationship between batch-signature verification and single-signature verification, leading to a remote assertion failure, aka TROVE-2021-007.
(CVE-2021-38385)
Tor 0.4.7.x before 0.4.7.8 allows a denial of service via the wedging of RTT estimation. (CVE-2022-33903)
The SafeSocks option in Tor before 0.4.7.13 has a logic error in which the unsafe SOCKS4 protocol can be used but not the safe SOCKS4a protocol, aka TROVE-2022-002. (CVE-2023-23589)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# @NOAGENT@
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 202305-11.
#
# The advisory text is Copyright (C) 2001-2021 Gentoo Foundation, Inc.
# and licensed under the Creative Commons - Attribution / Share Alike
# license. See http://creativecommons.org/licenses/by-sa/3.0/
#
include('compat.inc');
if (description)
{
script_id(175036);
script_version("1.0");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/05/03");
script_cve_id("CVE-2021-38385", "CVE-2022-33903", "CVE-2023-23589");
script_name(english:"GLSA-202305-11 : Tor: Multiple Vulnerabilities");
script_set_attribute(attribute:"synopsis", value:
"");
script_set_attribute(attribute:"description", value:
"The remote host is affected by the vulnerability described in GLSA-202305-11 (Tor: Multiple Vulnerabilities)
- Tor before 0.3.5.16, 0.4.5.10, and 0.4.6.7 mishandles the relationship between batch-signature
verification and single-signature verification, leading to a remote assertion failure, aka TROVE-2021-007.
(CVE-2021-38385)
- Tor 0.4.7.x before 0.4.7.8 allows a denial of service via the wedging of RTT estimation. (CVE-2022-33903)
- The SafeSocks option in Tor before 0.4.7.13 has a logic error in which the unsafe SOCKS4 protocol can be
used but not the safe SOCKS4a protocol, aka TROVE-2022-002. (CVE-2023-23589)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://security.gentoo.org/glsa/202305-11");
script_set_attribute(attribute:"see_also", value:"https://bugs.gentoo.org/show_bug.cgi?id=808681");
script_set_attribute(attribute:"see_also", value:"https://bugs.gentoo.org/show_bug.cgi?id=852821");
script_set_attribute(attribute:"see_also", value:"https://bugs.gentoo.org/show_bug.cgi?id=890618");
script_set_attribute(attribute:"solution", value:
"All Tor users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose >=net-vpn/tor-0.4.7.13");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-38385");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2023-23589");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2021/08/30");
script_set_attribute(attribute:"patch_publication_date", value:"2023/05/03");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/05/03");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:tor");
script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Gentoo Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");
exit(0);
}
include('qpkg.inc');
if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item('Host/Gentoo/release')) audit(AUDIT_OS_NOT, 'Gentoo');
if (!get_kb_item('Host/Gentoo/qpkg-list')) audit(AUDIT_PACKAGE_LIST_MISSING);
var flag = 0;
var packages = [
{
'name' : 'net-vpn/tor',
'unaffected' : make_list("ge 0.4.7.13"),
'vulnerable' : make_list("lt 0.4.7.13")
}
];
foreach var package( packages ) {
if (isnull(package['unaffected'])) package['unaffected'] = make_list();
if (isnull(package['vulnerable'])) package['vulnerable'] = make_list();
if (qpkg_check(package: package['name'] , unaffected: package['unaffected'], vulnerable: package['vulnerable'])) flag++;
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : qpkg_report_get()
);
exit(0);
}
else
{
qpkg_tests = list_uniq(qpkg_tests);
var tested = qpkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Tor');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38385
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-33903
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-23589
bugs.gentoo.org/show_bug.cgi?id=808681
bugs.gentoo.org/show_bug.cgi?id=852821
bugs.gentoo.org/show_bug.cgi?id=890618
security.gentoo.org/glsa/202305-11