9.3 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.7 High
AI Score
Confidence
High
0.024 Low
EPSS
Percentile
90.1%
The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-2770 advisory.
irc_mode_channel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via a malformed IRC message 324 (channel mode). (CVE-2020-8955)
A Vulnerability of LG Electronic web OS TV Emulator could allow an attacker to escalate privileges and overwrite certain files. This vulnerability is due to wrong environment setting. An attacker could exploit this vulnerability through crafted configuration files and executable files. (CVE-2020-9759)
An issue was discovered in WeeChat before 2.7.1 (0.3.4 to 2.7 are affected). When a new IRC message 005 is received with longer nick prefixes, a buffer overflow and possibly a crash can happen when a new mode is set for a nick. (CVE-2020-9760)
WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a crafted WebSocket frame that trigger an out-of-bounds read in plugins/relay/relay-websocket.c in the Relay plugin.
(CVE-2021-40516)
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 Debian Security Advisory dla-2770. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(153809);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/29");
script_cve_id(
"CVE-2020-8955",
"CVE-2020-9759",
"CVE-2020-9760",
"CVE-2021-40516"
);
script_name(english:"Debian DLA-2770-1 : weechat - LTS security update");
script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
script_set_attribute(attribute:"description", value:
"The remote Debian 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-2770 advisory.
- irc_mode_channel_update in plugins/irc/irc-mode.c in WeeChat through 2.7 allows remote attackers to cause
a denial of service (buffer overflow and application crash) or possibly have unspecified other impact via
a malformed IRC message 324 (channel mode). (CVE-2020-8955)
- A Vulnerability of LG Electronic web OS TV Emulator could allow an attacker to escalate privileges and
overwrite certain files. This vulnerability is due to wrong environment setting. An attacker could exploit
this vulnerability through crafted configuration files and executable files. (CVE-2020-9759)
- An issue was discovered in WeeChat before 2.7.1 (0.3.4 to 2.7 are affected). When a new IRC message 005 is
received with longer nick prefixes, a buffer overflow and possibly a crash can happen when a new mode is
set for a nick. (CVE-2020-9760)
- WeeChat before 3.2.1 allows remote attackers to cause a denial of service (crash) via a crafted WebSocket
frame that trigger an out-of-bounds read in plugins/relay/relay-websocket.c in the Relay plugin.
(CVE-2021-40516)
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:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=951289");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/weechat");
script_set_attribute(attribute:"see_also", value:"https://www.debian.org/lts/security/2021/dla-2770");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-8955");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-9759");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2020-9760");
script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2021-40516");
script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/stretch/weechat");
script_set_attribute(attribute:"solution", value:
"Upgrade the weechat packages.
For Debian 9 stretch, these problems have been fixed in version 1.6-1+deb9u3.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
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: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-2020-9759");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-9760");
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:"2020/02/12");
script_set_attribute(attribute:"patch_publication_date", value:"2021/09/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/10/01");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:weechat");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:weechat-core");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:weechat-curses");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:weechat-dbg");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:weechat-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:weechat-doc");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:weechat-plugins");
script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Debian Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");
exit(0);
}
include('audit.inc');
include('debian_package.inc');
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);
var release = get_kb_item('Host/Debian/release');
if ( isnull(release) ) audit(AUDIT_OS_NOT, 'Debian');
var release = chomp(release);
if (! preg(pattern:"^(9)\.[0-9]+", string:release)) audit(AUDIT_OS_NOT, 'Debian 9.0', 'Debian ' + release);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Debian', cpu);
var pkgs = [
{'release': '9.0', 'prefix': 'weechat', 'reference': '1.6-1+deb9u3'},
{'release': '9.0', 'prefix': 'weechat-core', 'reference': '1.6-1+deb9u3'},
{'release': '9.0', 'prefix': 'weechat-curses', 'reference': '1.6-1+deb9u3'},
{'release': '9.0', 'prefix': 'weechat-dbg', 'reference': '1.6-1+deb9u3'},
{'release': '9.0', 'prefix': 'weechat-dev', 'reference': '1.6-1+deb9u3'},
{'release': '9.0', 'prefix': 'weechat-doc', 'reference': '1.6-1+deb9u3'},
{'release': '9.0', 'prefix': 'weechat-plugins', 'reference': '1.6-1+deb9u3'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var release = NULL;
var prefix = NULL;
var reference = NULL;
if (!empty_or_null(package_array['release'])) release = package_array['release'];
if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (release && prefix && reference) {
if (deb_check(release:release, prefix:prefix, reference:reference)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : deb_report_get()
);
exit(0);
}
else
{
var tested = deb_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'weechat / weechat-core / weechat-curses / weechat-dbg / weechat-dev / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
debian | debian_linux | weechat | p-cpe:/a:debian:debian_linux:weechat |
debian | debian_linux | weechat-core | p-cpe:/a:debian:debian_linux:weechat-core |
debian | debian_linux | weechat-curses | p-cpe:/a:debian:debian_linux:weechat-curses |
debian | debian_linux | weechat-dbg | p-cpe:/a:debian:debian_linux:weechat-dbg |
debian | debian_linux | weechat-dev | p-cpe:/a:debian:debian_linux:weechat-dev |
debian | debian_linux | weechat-doc | p-cpe:/a:debian:debian_linux:weechat-doc |
debian | debian_linux | weechat-plugins | p-cpe:/a:debian:debian_linux:weechat-plugins |
debian | debian_linux | 9.0 | cpe:/o:debian:debian_linux:9.0 |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8955
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9759
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9760
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-40516
bugs.debian.org/cgi-bin/bugreport.cgi?bug=951289
packages.debian.org/source/stretch/weechat
security-tracker.debian.org/tracker/CVE-2020-8955
security-tracker.debian.org/tracker/CVE-2020-9759
security-tracker.debian.org/tracker/CVE-2020-9760
security-tracker.debian.org/tracker/CVE-2021-40516
security-tracker.debian.org/tracker/source-package/weechat
www.debian.org/lts/security/2021/dla-2770
9.3 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.7 High
AI Score
Confidence
High
0.024 Low
EPSS
Percentile
90.1%