Vulnerabilities > CVE-2018-7050 - NULL Pointer Dereference vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
PARTIAL Summary
An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. A NULL pointer dereference occurs for an "empty" nick.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2018-433D2DC3C7.NASL description This is new version fixing multiple vulnerabilities: CVE-2018-7050, CVE-2018-7051, CVE-2018-7052, CVE-2018-7053, CVE-2018-7054. 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 seen 2020-06-05 modified 2018-02-27 plugin id 107008 published 2018-02-27 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/107008 title Fedora 27 : irssi (2018-433d2dc3c7) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory FEDORA-2018-433d2dc3c7. # include("compat.inc"); if (description) { script_id(107008); script_version("3.3"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04"); script_cve_id("CVE-2018-7050", "CVE-2018-7051", "CVE-2018-7052", "CVE-2018-7053", "CVE-2018-7054"); script_xref(name:"FEDORA", value:"2018-433d2dc3c7"); script_name(english:"Fedora 27 : irssi (2018-433d2dc3c7)"); 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: "This is new version fixing multiple vulnerabilities: CVE-2018-7050, CVE-2018-7051, CVE-2018-7052, CVE-2018-7053, CVE-2018-7054. 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-2018-433d2dc3c7" ); script_set_attribute(attribute:"solution", value:"Update the affected irssi package."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); 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_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:irssi"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:27"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/02/15"); script_set_attribute(attribute:"patch_publication_date", value:"2018/02/26"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/27"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018-2020 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:"^27([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 27", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC27", reference:"irssi-1.0.7-1.fc27")) 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, "irssi"); }
NASL family SuSE Local Security Checks NASL id OPENSUSE-2018-171.NASL description This update for irssi fixes the following security issues : - CVE-2018-7054: Use after free when server is disconnected during netsplits - CVE-2018-7053: Use after free when SASL messages are received in unexpected order - CVE-2018-7050: NULL pointer dereference when an last seen 2020-06-05 modified 2018-02-20 plugin id 106889 published 2018-02-20 reporter This script is Copyright (C) 2018-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/106889 title openSUSE Security Update : irssi (openSUSE-2018-171) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update openSUSE-2018-171. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(106889); script_version("3.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04"); script_cve_id("CVE-2018-7050", "CVE-2018-7051", "CVE-2018-7052", "CVE-2018-7053", "CVE-2018-7054"); script_name(english:"openSUSE Security Update : irssi (openSUSE-2018-171)"); script_summary(english:"Check for the openSUSE-2018-171 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 irssi fixes the following security issues : - CVE-2018-7054: Use after free when server is disconnected during netsplits - CVE-2018-7053: Use after free when SASL messages are received in unexpected order - CVE-2018-7050: NULL pointer dereference when an 'empty' nick has been observed - CVE-2018-7052: When the number of windows exceed the available space, Irssi would crash due to NULL pointer dereference - CVE-2018-7051: Certain nick names could result in out of bounds access when printing theme strings" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.opensuse.org/show_bug.cgi?id=1081238" ); script_set_attribute( attribute:"solution", value:"Update the affected irssi packages." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); 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_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:irssi"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:irssi-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:irssi-debugsource"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:irssi-devel"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:42.3"); script_set_attribute(attribute:"patch_publication_date", value:"2018/02/19"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/02/20"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018-2020 Tenable Network Security, Inc."); 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 !~ "^(SUSE42\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "42.3", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE42.3", reference:"irssi-1.0.7-25.1") ) flag++; if ( rpm_check(release:"SUSE42.3", reference:"irssi-debuginfo-1.0.7-25.1") ) flag++; if ( rpm_check(release:"SUSE42.3", reference:"irssi-debugsource-1.0.7-25.1") ) flag++; if ( rpm_check(release:"SUSE42.3", reference:"irssi-devel-1.0.7-25.1") ) 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, "irssi / irssi-debuginfo / irssi-debugsource / irssi-devel"); }
NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4162.NASL description Multiple vulnerabilities have been discovered in Irssi, a terminal-based IRC client which can result in denial of service. last seen 2020-06-01 modified 2020-06-02 plugin id 108774 published 2018-04-02 reporter This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108774 title Debian DSA-4162-1 : irssi - security update NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_7AFC5E56156D11E895F2005056925DB4.NASL description Irssi reports : Use after free when server is disconnected during netsplits. Found by Joseph Bisch. Use after free when SASL messages are received in unexpected order. Found by Joseph Bisch. NULL pointer dereference when an last seen 2020-06-01 modified 2020-06-02 plugin id 106881 published 2018-02-20 reporter This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/106881 title FreeBSD : irssi -- multiple vulnerabilities (7afc5e56-156d-11e8-95f2-005056925db4) NASL family Fedora Local Security Checks NASL id FEDORA_2018-CBC52E8812.NASL description This is new version fixing multiple vulnerabilities: CVE-2018-7050, CVE-2018-7051, CVE-2018-7052, CVE-2018-7053, CVE-2018-7054. 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 seen 2020-06-05 modified 2018-02-27 plugin id 107013 published 2018-02-27 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/107013 title Fedora 26 : irssi (2018-cbc52e8812) NASL family Slackware Local Security Checks NASL id SLACKWARE_SSA_2018-046-01.NASL description New irssi packages are available for Slackware 14.0, 14.1, 14.2, and -current to fix security issues. last seen 2020-06-01 modified 2020-06-02 plugin id 106850 published 2018-02-16 reporter This script is Copyright (C) 2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/106850 title Slackware 14.0 / 14.1 / 14.2 / current : irssi (SSA:2018-046-01) NASL family Slackware Local Security Checks NASL id SLACKWARE_SSA_2019-011-01.NASL description New irssi packages are available for Slackware 14.0, 14.1, 14.2, and -current to fix security issues. last seen 2020-03-17 modified 2019-01-14 plugin id 121144 published 2019-01-14 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/121144 title Slackware 14.0 / 14.1 / 14.2 / current : irssi (SSA:2019-011-01) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2018-1060.NASL description According to the versions of the irssi package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. A NULL pointer dereference occurs for an last seen 2020-06-10 modified 2018-03-20 plugin id 108464 published 2018-03-20 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108464 title EulerOS 2.0 SP1 : irssi (EulerOS-SA-2018-1060) NASL family Debian Local Security Checks NASL id DEBIAN_DLA-1289.NASL description It was discovered that there where a number of vulnerabilities in irssi, the terminal based IRC client : - CVE-2018-7050: NULL pointer dereference for an last seen 2020-03-17 modified 2018-02-23 plugin id 106954 published 2018-02-23 reporter This script is Copyright (C) 2018-2020 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/106954 title Debian DLA-1289-1 : irssi security update NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-3590-1.NASL description It was discovered that Irssi incorrectly handled certain empty nick names. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-7050) It was discovered that Irssi incorrectly handled certain nick names. An attacker could possibly use this to access sensitive information. (CVE-2018-7051) It was discovered that Irssi incorrectly handled an increase in the number of windows. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-7052) It was discovered that Irssi incorrectly handled certain messages. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2018-7053) It was discovered that Irssi incorrectly handled certain disconnections. An attacker could possibly use this to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 17.10. (CVE-2018-7054). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 107193 published 2018-03-07 reporter Ubuntu Security Notice (C) 2018-2019 Canonical, Inc. / NASL script (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/107193 title Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : irssi vulnerabilities (USN-3590-1) NASL family Huawei Local Security Checks NASL id EULEROS_SA-2018-1061.NASL description According to the versions of the irssi package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - An issue was discovered in Irssi before 1.0.7 and 1.1.x before 1.1.1. A NULL pointer dereference occurs for an last seen 2020-05-08 modified 2018-03-20 plugin id 108465 published 2018-03-20 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108465 title EulerOS 2.0 SP2 : irssi (EulerOS-SA-2018-1061)