Vulnerabilities > CVE-2018-6519 - Injection vulnerability in multiple products
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
NONE Integrity impact
NONE Availability impact
HIGH Summary
The SAML2 library before 1.10.4, 2.x before 2.3.5, and 3.x before 3.1.1 in SimpleSAMLphp has a Regular Expression Denial of Service vulnerability for fraction-of-seconds data in a timestamp.
Vulnerable Configurations
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.
- Server Side Include (SSI) Injection An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
- Cross Site Scripting through Log Files An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
- Command Line Execution through SQL Injection An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
- Subverting Environment Variable Values The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
Nessus
NASL family Fedora Local Security Checks NASL id FEDORA_2018-8CDA2309D6.NASL description - [SSPSA 201803-01 / CVE-2018-7711](https://simplesamlphp.org/security/201803 -01) - [SSPSA 201802-01 / CVE-2018-7644](https://simplesamlphp.org/security/201802 -01) - [SSPSA 201801-01 / CVE-2018-6519](https://simplesamlphp.org/security/201801 -01) 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 2019-01-03 plugin id 120598 published 2019-01-03 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/120598 title Fedora 28 : php-simplesamlphp-saml2_3 (2018-8cda2309d6) 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-2018-8cda2309d6. # include("compat.inc"); if (description) { script_id(120598); script_version("1.4"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04"); script_cve_id("CVE-2018-6519", "CVE-2018-7644", "CVE-2018-7711"); script_xref(name:"FEDORA", value:"2018-8cda2309d6"); script_name(english:"Fedora 28 : php-simplesamlphp-saml2_3 (2018-8cda2309d6)"); 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: " - [SSPSA 201803-01 / CVE-2018-7711](https://simplesamlphp.org/security/201803 -01) - [SSPSA 201802-01 / CVE-2018-7644](https://simplesamlphp.org/security/201802 -01) - [SSPSA 201801-01 / CVE-2018-6519](https://simplesamlphp.org/security/201801 -01) 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-2018-8cda2309d6" ); script_set_attribute( attribute:"solution", value:"Update the affected php-simplesamlphp-saml2_3 package." ); 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:U/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: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:php-simplesamlphp-saml2_3"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:28"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/02/02"); script_set_attribute(attribute:"patch_publication_date", value:"2018/03/30"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/03"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 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:"^28([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 28", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC28", reference:"php-simplesamlphp-saml2_3-3.1.4-3.fc28")) 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, "php-simplesamlphp-saml2_3"); }
NASL family Fedora Local Security Checks NASL id FEDORA_2018-37E28670F2.NASL description - [SSPSA 201803-01 / CVE-2018-7711](https://simplesamlphp.org/security/201803 -01) - [SSPSA 201802-01 / CVE-2018-7644](https://simplesamlphp.org/security/201802 -01) - [SSPSA 201801-01 / CVE-2018-6519](https://simplesamlphp.org/security/201801 -01) 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 2018-03-27 plugin id 108615 published 2018-03-27 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/108615 title Fedora 27 : php-simplesamlphp-saml2_3 (2018-37e28670f2) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4127.NASL description Several vulnerabilities have been discovered in SimpleSAMLphp, a framework for authentication, primarily via the SAML protocol. - CVE-2017-12867 Attackers with access to a secret token could extend its validity period by manipulating the prepended time offset. - CVE-2017-12869 When using the multiauth module, attackers can bypass authentication context restrictions and use any authentication source defined in the config. - CVE-2017-12873 Defensive measures have been taken to prevent the administrator from misconfiguring persistent NameIDs to avoid identifier clash. (Affects Debian 8 Jessie only.) - CVE-2017-12874 The InfoCard module could accept incorrectly signed XML messages in rare occasions. - CVE-2017-18121 The consentAdmin module was vulnerable to a Cross-Site Scripting attack, allowing an attacker to craft links that could execute arbitrary JavaScript code in the victim last seen 2020-06-01 modified 2020-06-02 plugin id 107119 published 2018-03-05 reporter This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/107119 title Debian DSA-4127-1 : simplesamlphp - security update NASL family Fedora Local Security Checks NASL id FEDORA_2018-0EE228DA17.NASL description - [SSPSA 201803-01 / CVE-2018-7711](https://simplesamlphp.org/security/201803 -01) - [SSPSA 201802-01 / CVE-2018-7644](https://simplesamlphp.org/security/201802 -01) - [SSPSA 201801-01 / CVE-2018-6519](https://simplesamlphp.org/security/201801 -01) 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 2019-01-03 plugin id 120236 published 2019-01-03 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/120236 title Fedora 28 : php-simplesamlphp-saml2_1 (2018-0ee228da17) NASL family Fedora Local Security Checks NASL id FEDORA_2018-F4AB4D96F9.NASL description - [SSPSA 201803-01 / CVE-2018-7711](https://simplesamlphp.org/security/201803 -01) - [SSPSA 201802-01 / CVE-2018-7644](https://simplesamlphp.org/security/201802 -01) - [SSPSA 201801-01 / CVE-2018-6519](https://simplesamlphp.org/security/201801 -01) 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 2018-03-27 plugin id 108622 published 2018-03-27 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/108622 title Fedora 26 : php-simplesamlphp-saml2 (2018-f4ab4d96f9) NASL family Fedora Local Security Checks NASL id FEDORA_2018-96601292A2.NASL description - [SSPSA 201803-01 / CVE-2018-7711](https://simplesamlphp.org/security/201803 -01) - [SSPSA 201802-01 / CVE-2018-7644](https://simplesamlphp.org/security/201802 -01) - [SSPSA 201801-01 / CVE-2018-6519](https://simplesamlphp.org/security/201801 -01) 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 2018-03-27 plugin id 108619 published 2018-03-27 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/108619 title Fedora 27 : php-simplesamlphp-saml2_1 (2018-96601292a2) NASL family Fedora Local Security Checks NASL id FEDORA_2018-6DB40B0C37.NASL description - [SSPSA 201803-01 / CVE-2018-7711](https://simplesamlphp.org/security/201803 -01) - [SSPSA 201802-01 / CVE-2018-7644](https://simplesamlphp.org/security/201802 -01) - [SSPSA 201801-01 / CVE-2018-6519](https://simplesamlphp.org/security/201801 -01) 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 2018-03-27 plugin id 108618 published 2018-03-27 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/108618 title Fedora 27 : php-simplesamlphp-saml2 (2018-6db40b0c37) NASL family Fedora Local Security Checks NASL id FEDORA_2018-D809BD2FD6.NASL description - [SSPSA 201803-01 / CVE-2018-7711](https://simplesamlphp.org/security/201803 -01) - [SSPSA 201802-01 / CVE-2018-7644](https://simplesamlphp.org/security/201802 -01) - [SSPSA 201801-01 / CVE-2018-6519](https://simplesamlphp.org/security/201801 -01) 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 2018-03-27 plugin id 108620 published 2018-03-27 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/108620 title Fedora 26 : php-simplesamlphp-saml2_1 (2018-d809bd2fd6) NASL family Fedora Local Security Checks NASL id FEDORA_2018-85CB15BEFD.NASL description - [SSPSA 201803-01 / CVE-2018-7711](https://simplesamlphp.org/security/201803 -01) - [SSPSA 201802-01 / CVE-2018-7644](https://simplesamlphp.org/security/201802 -01) - [SSPSA 201801-01 / CVE-2018-6519](https://simplesamlphp.org/security/201801 -01) 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 2019-01-03 plugin id 120582 published 2019-01-03 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/120582 title Fedora 28 : php-simplesamlphp-saml2 (2018-85cb15befd) NASL family Fedora Local Security Checks NASL id FEDORA_2018-F2097D8937.NASL description - [SSPSA 201803-01 / CVE-2018-7711](https://simplesamlphp.org/security/201803 -01) - [SSPSA 201802-01 / CVE-2018-7644](https://simplesamlphp.org/security/201802 -01) - [SSPSA 201801-01 / CVE-2018-6519](https://simplesamlphp.org/security/201801 -01) 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 2018-03-27 plugin id 108621 published 2018-03-27 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/108621 title Fedora 26 : php-simplesamlphp-saml2_3 (2018-f2097d8937)