Vulnerabilities > CVE-2020-8955 - Classic Buffer Overflow vulnerability in multiple products

047910
CVSS 9.8 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
weechat
fedoraproject
opensuse
debian
CWE-120
critical
nessus
NVD
Published: 2020-02-12
Updated: 2024-11-21

Summary

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).

Vulnerable Configurations

Part Description Count
Application
Weechat
75
Application
Opensuse
2
OS
Fedoraproject
3
OS
Opensuse
1
OS
Debian
2

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2020-DB890B4800.NASL
    descriptionNew version, fixes a lot of bugs (some of them security). In the same update, fixed up epel7 build to latest version as well. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-03-20
    modified2020-03-18
    plugin id134639
    published2020-03-18
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134639
    titleFedora 31 : weechat (2020-db890b4800)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2020-db890b4800.
#

include("compat.inc");

if (description)
{
  script_id(134639);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/20");

  script_cve_id("CVE-2017-8073", "CVE-2020-8955");
  script_xref(name:"FEDORA", value:"2020-db890b4800");

  script_name(english:"Fedora 31 : weechat (2020-db890b4800)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"New version, fixes a lot of bugs (some of them security). In the same
update, fixed up epel7 build to latest version as well.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as
possible without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bodhi.fedoraproject.org/updates/FEDORA-2020-db890b4800"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected weechat package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:weechat");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:31");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/04/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/18");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^31([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 31", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/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, "Fedora", cpu);


flag = 0;
if (rpm_check(release:"FC31", reference:"weechat-2.7.1-1.fc31")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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, "weechat");
}
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2020-4D232B48B8.NASL
    descriptionNew version, fixes a lot of bugs (some of them security). In the same update, fixed up epel7 build to latest version as well. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-03-20
    modified2020-03-18
    plugin id134635
    published2020-03-18
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134635
    titleFedora 30 : weechat (2020-4d232b48b8)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Fedora Security Advisory FEDORA-2020-4d232b48b8.
#

include("compat.inc");

if (description)
{
  script_id(134635);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/20");

  script_cve_id("CVE-2017-8073", "CVE-2020-8955");
  script_xref(name:"FEDORA", value:"2020-4d232b48b8");

  script_name(english:"Fedora 30 : weechat (2020-4d232b48b8)");
  script_summary(english:"Checks rpm output for the updated package.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Fedora host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"New version, fixes a lot of bugs (some of them security). In the same
update, fixed up epel7 build to latest version as well.

Note that Tenable Network Security has extracted the preceding
description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as
possible without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bodhi.fedoraproject.org/updates/FEDORA-2020-4d232b48b8"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected weechat package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:weechat");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:30");

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/04/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/18");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Fedora Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");

  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/RedHat/release");
if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
os_ver = os_ver[1];
if (! preg(pattern:"^30([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 30", "Fedora " + os_ver);

if (!get_kb_item("Host/RedHat/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, "Fedora", cpu);


flag = 0;
if (rpm_check(release:"FC30", reference:"weechat-2.7.1-1.fc30")) flag++;


if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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, "weechat");
}
  • NASL familySuSE Local Security Checks
    NASL idOPENSUSE-2020-248.NASL
    descriptionThis update for weechat fixes the following security issue : - CVE-2020-8955: Fixed a buffer overflow in plugins/irc/irc-mode.c that allowed attackers to cause a denial of service (bsc#1163889).
    last seen2020-03-18
    modified2020-02-28
    plugin id134153
    published2020-02-28
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134153
    titleopenSUSE Security Update : weechat (openSUSE-2020-248)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from openSUSE Security Update openSUSE-2020-248.
#
# The text description of this plugin is (C) SUSE LLC.
#

include("compat.inc");

if (description)
{
  script_id(134153);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/06");

  script_cve_id("CVE-2020-8955");

  script_name(english:"openSUSE Security Update : weechat (openSUSE-2020-248)");
  script_summary(english:"Check for the openSUSE-2020-248 patch");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote openSUSE host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"This update for weechat fixes the following security issue :

  - CVE-2020-8955: Fixed a buffer overflow in
    plugins/irc/irc-mode.c that allowed attackers to cause a
    denial of service (bsc#1163889)."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1163889"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected weechat packages."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-aspell");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-aspell-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-guile");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-guile-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-lang");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-lua");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-lua-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-perl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-perl-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-python-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-ruby");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-ruby-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-tcl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:weechat-tcl-debuginfo");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:15.1");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/02/27");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/28");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"SuSE Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/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/SuSE/release");
if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE");
if (release !~ "^(SUSE15\.1)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "15.1", release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

ourarch = get_kb_item("Host/cpu");
if (!ourarch) audit(AUDIT_UNKNOWN_ARCH);
if (ourarch !~ "^(x86_64)$") audit(AUDIT_ARCH_NOT, "x86_64", ourarch);

flag = 0;

if ( rpm_check(release:"SUSE15.1", reference:"weechat-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-aspell-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-aspell-debuginfo-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-debuginfo-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-debugsource-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-devel-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-guile-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-guile-debuginfo-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-lang-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-lua-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-lua-debuginfo-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-perl-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-perl-debuginfo-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-python-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-python-debuginfo-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-ruby-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-ruby-debuginfo-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-tcl-2.1-lp151.3.3.1") ) flag++;
if ( rpm_check(release:"SUSE15.1", reference:"weechat-tcl-debuginfo-2.1-lp151.3.3.1") ) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "weechat / weechat-aspell / weechat-aspell-debuginfo / etc");
}
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-202003-51.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-202003-51 (WeeChat: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in WeeChat. Please review the CVE identifiers referenced below for details. Impact : A remote attacker, by sending a specially crafted IRC message, could possibly cause a Denial of Service condition. Workaround : There is no known workaround at this time.
    last seen2020-03-31
    modified2020-03-26
    plugin id134926
    published2020-03-26
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134926
    titleGLSA-202003-51 : WeeChat: Multiple vulnerabilities
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Gentoo Linux Security Advisory GLSA 202003-51.
#
# The advisory text is Copyright (C) 2001-2020 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(134926);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/30");

  script_cve_id("CVE-2020-8955", "CVE-2020-9759", "CVE-2020-9760");
  script_xref(name:"GLSA", value:"202003-51");

  script_name(english:"GLSA-202003-51 : WeeChat: Multiple vulnerabilities");
  script_summary(english:"Checks for updated package(s) in /var/db/pkg");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Gentoo host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The remote host is affected by the vulnerability described in GLSA-202003-51
(WeeChat: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in WeeChat. Please review
      the CVE identifiers referenced below for details.
  
Impact :

    A remote attacker, by sending a specially crafted IRC message, could
      possibly cause a Denial of Service condition.
  
Workaround :

    There is no known workaround at this time."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security.gentoo.org/glsa/202003-51"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"All WeeChat users should upgrade to the latest version:
      # emerge --sync
      # emerge --ask --oneshot --verbose '>=net-irc/weechat-2.7.1'"
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:weechat");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/26");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Gentoo Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
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);


flag = 0;

if (qpkg_check(package:"net-irc/weechat", unaffected:make_list("ge 2.7.1"), vulnerable:make_list("lt 2.7.1"))) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = qpkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "WeeChat");
}
  • NASL familyFreeBSD Local Security Checks
    NASL idFREEBSD_PKG_8E3F181254D911EA8D49D4C9EF517024.NASL
    descriptionThe WeeChat project reports : Buffer overflow when receiving a malformed IRC message 324 (channel mode). (CVE-2020-8955) Buffer overflow when a new IRC message 005 is received with longer nick prefixes. Crash when receiving a malformed IRC message 352 (WHO).
    last seen2020-03-18
    modified2020-02-24
    plugin id133894
    published2020-02-24
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/133894
    titleFreeBSD : WeeChat -- Multiple vulnerabilities (8e3f1812-54d9-11ea-8d49-d4c9ef517024)
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2020 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(133894);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/26");

  script_cve_id("CVE-2020-8955");

  script_name(english:"FreeBSD : WeeChat -- Multiple vulnerabilities (8e3f1812-54d9-11ea-8d49-d4c9ef517024)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"The WeeChat project reports :

Buffer overflow when receiving a malformed IRC message 324 (channel
mode). (CVE-2020-8955)

Buffer overflow when a new IRC message 005 is received with longer
nick prefixes.

Crash when receiving a malformed IRC message 352 (WHO)."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://weechat.org/doc/security/"
  );
  # https://vuxml.freebsd.org/freebsd/8e3f1812-54d9-11ea-8d49-d4c9ef517024.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?eba13c51"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:weechat");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/02/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/24");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"weechat<2.7.1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DLA-2157.NASL
    descriptionSeveral issues have been found in weechat, a fast, light and extensible chat client. All issues are about crafted messages, that could result in a buffer overflow and application crash. This could cause a denial of service or possibly have other impact. For Debian 8
    last seen2020-03-28
    modified2020-03-25
    plugin id134881
    published2020-03-25
    reporterThis script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/134881
    titleDebian DLA-2157-1 : weechat security update
    code
    #
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory DLA-2157-1. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(134881);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/27");

  script_cve_id("CVE-2020-8955", "CVE-2020-9759", "CVE-2020-9760");

  script_name(english:"Debian DLA-2157-1 : weechat security update");
  script_summary(english:"Checks dpkg output for the updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several issues have been found in weechat, a fast, light and
extensible chat client. All issues are about crafted messages, that
could result in a buffer overflow and application crash. This could
cause a denial of service or possibly have other impact.

For Debian 8 'Jessie', these problems have been fixed in version
1.0.1-1+deb8u3.

We recommend that you upgrade your weechat packages.

NOTE: Tenable Network Security has extracted the preceding description
block directly from the DLA security advisory. Tenable has attempted
to automatically clean and format it as much as possible without
introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://lists.debian.org/debian-lts-announce/2020/03/msg00031.html"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/jessie/weechat"
  );
  script_set_attribute(attribute:"solution", value:"Upgrade the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  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:8.0");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/02/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/03/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/03/25");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  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/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"8.0", prefix:"weechat", reference:"1.0.1-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"weechat-core", reference:"1.0.1-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"weechat-curses", reference:"1.0.1-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"weechat-dbg", reference:"1.0.1-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"weechat-dev", reference:"1.0.1-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"weechat-doc", reference:"1.0.1-1+deb8u3")) flag++;
if (deb_check(release:"8.0", prefix:"weechat-plugins", reference:"1.0.1-1+deb8u3")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

References