CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
85.7%
The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has thunderbird packages installed that are affected by multiple vulnerabilities:
When processing an email message with an ill-formed envelope, Thunderbird could read data from a random memory location. This vulnerability affects Thunderbird < 68.5. (CVE-2020-6793)
When processing a message that contains multiple S/MIME signatures, a bug in the MIME processing code caused a null pointer dereference, leading to an unexploitable crash. This vulnerability affects Thunderbird < 68.5.
(CVE-2020-6795)
When deriving an identifier for an email message, uninitialized memory was used in addition to the message contents. This vulnerability affects Thunderbird < 68.5.
(CVE-2020-6792)
If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result. In general, this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but is potentially a risk in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
(CVE-2020-6798)
Mozilla developers and community members reported memory safety bugs present in Firefox 72 and Firefox ESR 68.4.
Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. In general, these flaws cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but are potentially risks in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
(CVE-2020-6800)
If a user saved passwords before Thunderbird 60 and then later set a master password, an unencrypted copy of these passwords is still accessible. This is because the older stored password file was not deleted when the data was copied to a new format starting in Thunderbird 60.
The new master password is added only on the new file.
This could allow the exposure of stored password data outside of user expectations. This vulnerability affects Thunderbird < 68.5. (CVE-2020-6794)
Note that Nessus has not tested for this issue but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2020-0025. The text
# itself is copyright (C) ZTE, Inc.
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(136909);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/08");
script_cve_id(
"CVE-2020-6792",
"CVE-2020-6793",
"CVE-2020-6794",
"CVE-2020-6795",
"CVE-2020-6798",
"CVE-2020-6800"
);
script_name(english:"NewStart CGSL CORE 5.04 / MAIN 5.04 : thunderbird Multiple Vulnerabilities (NS-SA-2020-0025)");
script_set_attribute(attribute:"synopsis", value:
"The remote machine is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has thunderbird packages installed that are
affected by multiple vulnerabilities:
- When processing an email message with an ill-formed
envelope, Thunderbird could read data from a random
memory location. This vulnerability affects Thunderbird
< 68.5. (CVE-2020-6793)
- When processing a message that contains multiple S/MIME
signatures, a bug in the MIME processing code caused a
null pointer dereference, leading to an unexploitable
crash. This vulnerability affects Thunderbird < 68.5.
(CVE-2020-6795)
- When deriving an identifier for an email message,
uninitialized memory was used in addition to the message
contents. This vulnerability affects Thunderbird < 68.5.
(CVE-2020-6792)
- If a template tag was used in a select tag, the parser
could be confused and allow JavaScript parsing and
execution when it should not be allowed. A site that
relied on the browser behaving correctly could suffer a
cross-site scripting vulnerability as a result. In
general, this flaw cannot be exploited through email in
the Thunderbird product because scripting is disabled
when reading mail, but is potentially a risk in browser
or browser-like contexts. This vulnerability affects
Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
(CVE-2020-6798)
- Mozilla developers and community members reported memory
safety bugs present in Firefox 72 and Firefox ESR 68.4.
Some of these bugs showed evidence of memory corruption
and we presume that with enough effort some of these
could have been exploited to run arbitrary code. In
general, these flaws cannot be exploited through email
in the Thunderbird product because scripting is disabled
when reading mail, but are potentially risks in browser
or browser-like contexts. This vulnerability affects
Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
(CVE-2020-6800)
- If a user saved passwords before Thunderbird 60 and then
later set a master password, an unencrypted copy of
these passwords is still accessible. This is because the
older stored password file was not deleted when the data
was copied to a new format starting in Thunderbird 60.
The new master password is added only on the new file.
This could allow the exposure of stored password data
outside of user expectations. This vulnerability affects
Thunderbird < 68.5. (CVE-2020-6794)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2020-0025");
script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL thunderbird packages. Note that updated packages may not be available yet. Please contact
ZTE for more information.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/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:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-6800");
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:"2020/03/02");
script_set_attribute(attribute:"patch_publication_date", value:"2020/05/25");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/05/27");
script_set_attribute(attribute:"plugin_type", value:"local");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"NewStart CGSL Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/ZTE-CGSL/release");
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, "NewStart Carrier Grade Server Linux");
if (release !~ "CGSL CORE 5.04" &&
release !~ "CGSL MAIN 5.04")
audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.04 / NewStart CGSL MAIN 5.04');
if (!get_kb_item("Host/ZTE-CGSL/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "NewStart Carrier Grade Server Linux", cpu);
flag = 0;
pkgs = {
"CGSL CORE 5.04": [
"thunderbird-68.5.0-1.el7.centos",
"thunderbird-debuginfo-68.5.0-1.el7.centos"
],
"CGSL MAIN 5.04": [
"thunderbird-68.5.0-1.el7.centos",
"thunderbird-debuginfo-68.5.0-1.el7.centos"
]
};
pkg_list = pkgs[release];
foreach (pkg in pkg_list)
if (rpm_check(release:"ZTE " + release, reference:pkg)) flag++;
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "thunderbird");
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6792
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6793
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6794
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6795
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6798
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-6800
security.gd-linux.com/notice/NS-SA-2020-0025
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
85.7%