CVE-2018-6521
First published: Wed Jan 31 2018(Updated: )
The sqlauth module in SimpleSAMLphp before 1.15.2 relies on the MySQL utf8 charset, which truncates queries upon encountering four-byte characters. There might be a scenario in which this allows remote attackers to bypass intended access restrictions.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/simplesamlphp/simplesamlphp | <1.15.2 | |
| debian/simplesamlphp | 1.16.3-1+deb10u2 1.16.3-1+deb10u1 1.19.0-1 1.19.7-1 | |
| composer/simplesamlphp/simplesamlphp | <1.15.2 | 1.15.2 |
| SimpleSAMLphp | <1.15.2 | |
| Debian GNU/Linux | =7.0 | |
| Debian GNU/Linux | =8.0 | |
| Debian GNU/Linux | =9.0 |
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Reference Links
- https://simplesamlphp.org/security/201801-03
- https://security-tracker.debian.org/tracker/CVE-2018-6521
- https://lists.debian.org/debian-lts-announce/2018/02/msg00008.html
- https://www.debian.org/security/2018/dsa-4127
- https://nvd.nist.gov/vuln/detail/CVE-2018-6521
- https://github.com/FriendsOfPHP/security-advisories/blob/master/simplesamlphp/simplesamlphp/CVE-2018-6521.yaml
- https://github.com/advisories/GHSA-qv5p-6wrc-79wg (Advisory)
Frequently Asked Questions
What is CVE-2018-6521?
CVE-2018-6521 is a vulnerability in the sqlauth module of SimpleSAMLphp before version 1.15.2 that allows remote attackers to bypass access restrictions.
What is the severity of CVE-2018-6521?
The severity of CVE-2018-6521 is critical with a CVSS score of 9.8.
How does CVE-2018-6521 impact SimpleSAMLphp?
CVE-2018-6521 impacts SimpleSAMLphp by relying on the MySQL utf8 charset, which can truncate queries containing four-byte characters.
How can remote attackers exploit CVE-2018-6521?
Remote attackers can exploit CVE-2018-6521 to bypass intended access restrictions.
How can I fix CVE-2018-6521?
To fix CVE-2018-6521, update SimpleSAMLphp to version 1.15.2 or higher.
- collector/friends-of-php
- collector/security-tracker-debian
- agent/type
- agent/first-publish-date
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-qv5p-6wrc-79wg
- alias/CVE-2018-6521
- agent/software-canonical-lookup
- agent/references
- agent/severity
- agent/description
- agent/author
- collector/github-advisory
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/event
- agent/trending
- agent/source
- collector/nvd-cve
- source/NVD
- agent/software-canonical-lookup-request
- agent/softwarecombine
- agent/tags
- collector/nvd-index
- package-manager/composer
- package-manager/debian
- vendor/simplesamlphp
- canonical/simplesamlphp
- vendor/debian
- canonical/debian gnu/linux
- version/debian gnu/linux/7.0
- version/debian gnu/linux/8.0
- version/debian gnu/linux/9.0