Vulnerabilities > CVE-2017-14955 - Race Condition vulnerability in Checkmk
Attack vector
NETWORK Attack complexity
HIGH Privileges required
NONE Confidentiality impact
HIGH Integrity impact
NONE Availability impact
NONE Summary
Check_MK before 1.2.8p26 mishandles certain errors within the failed-login save feature because of a race condition, which allows remote attackers to obtain sensitive user information by reading a GUI crash report.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 19 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Leveraging Race Conditions This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
- Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.
Exploit-Db
description | Check_MK 1.2.8p25 - Information Disclosure. CVE-2017-14955. Webapps exploit for Python platform |
file | exploits/python/webapps/43021.py |
id | EDB-ID:43021 |
last seen | 2017-10-20 |
modified | 2017-10-18 |
platform | python |
port | |
published | 2017-10-18 |
reporter | Exploit-DB |
source | https://www.exploit-db.com/download/43021/ |
title | Check_MK 1.2.8p25 - Information Disclosure |
type | webapps |
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2017-9F36DA1AAC.NASL description Security fix for CVE-2017-1495 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 2017-10-24 plugin id 104112 published 2017-10-24 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/104112 title Fedora 26 : check-mk (2017-9f36da1aac) 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-2017-9f36da1aac. # include("compat.inc"); if (description) { script_id(104112); script_version("3.5"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04"); script_cve_id("CVE-2017-1495", "CVE-2017-14955"); script_xref(name:"FEDORA", value:"2017-9f36da1aac"); script_name(english:"Fedora 26 : check-mk (2017-9f36da1aac)"); 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: "Security fix for CVE-2017-1495 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-2017-9f36da1aac" ); script_set_attribute( attribute:"solution", value:"Update the affected check-mk package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:check-mk"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:26"); script_set_attribute(attribute:"vuln_publication_date", value:"2017/08/02"); script_set_attribute(attribute:"patch_publication_date", value:"2017/10/23"); script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/24"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2017-2020 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:"^26([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 26", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC26", reference:"check-mk-1.2.8p26-1.fc26")) 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, "check-mk"); }
NASL family Fedora Local Security Checks NASL id FEDORA_2017-79B7FD1B4D.NASL description Security fix for CVE-2017-1495 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 2018-01-15 plugin id 105908 published 2018-01-15 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/105908 title Fedora 27 : check-mk (2017-79b7fd1b4d) NASL family Fedora Local Security Checks NASL id FEDORA_2017-6BBB922009.NASL description Security fix for CVE-2017-1495 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 2017-10-24 plugin id 104111 published 2017-10-24 reporter This script is Copyright (C) 2017-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/104111 title Fedora 25 : check-mk (2017-6bbb922009)
Packetstorm
data source | https://packetstormsecurity.com/files/download/144689/RCESEC-2017-001.txt |
id | PACKETSTORM:144689 |
last seen | 2017-10-21 |
published | 2017-10-19 |
reporter | Julien Ahrens |
source | https://packetstormsecurity.com/files/144689/Check_mk-1.2.8p25-save_users-Race-Condition.html |
title | Check_mk 1.2.8p25 save_users() Race Condition |