CVE-2018-6520 SimpleSAMLphp Open redirection protection bypass
Remote attackers can bypass open redirect protections in SimpleSAMLphp by crafting malicious authority data in URLs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2018-6520?
CVE-2018-6520 is a medium-severity vulnerability in n/a, published on 2 Feb 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
SimpleSAMLphp before 1.15.2 allows remote attackers to bypass an open redirect protection mechanism via crafted authority data in a URL.
Weakness: CWE-601
Which versions are affected by CVE-2018-6520?
2 open source packages ship an affected version, including simplesamlphp/simplesamlphp. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
simplesamlphp/simplesamlphp Packagist | All versions | 1.15.2 |
simplesamlphp/simplesamlphp Packagist | All versions | 1.15.2 |
Products include Simplesamlphp Simplesamlphp.
How do I fix CVE-2018-6520?
Upgrade simplesamlphp/simplesamlphp to 1.15.2 or later.
Is CVE-2018-6520 being exploited?
There is no known exploitation of CVE-2018-6520 in the wild and no public exploit code.
Other vulnerabilities in n/a
- CVE-2017-12868 SimpleSAMLphp Session fixation issue and authentication bypass in the authcrypt module
- CVE-2018-7644 SimpleSAMLphp Improper Verification of Cryptographic Signature
- CVE-2026-49284 SimpleSAMLphp SP accepts a response from an unexpected IdP when unsigned `Response/InResponseTo` is combined with a signed assertion lacking `SubjectConfirmationData/InResponseTo`
- CVE-2017-12870 SimpleSAMLphp Unauthenticated encryption in CBC mode
- CVE-2017-12871 SimpleSAMLphp Incorrect IV generation for encryption
Sources
Also known as DEBIAN-CVE-2018-6520, GHSA-2qfc-48v5-4w5h, UBUNTU-CVE-2018-6520.