CVE-2018-7711

N/A

Published: March 5, 2018 at 10:00 PM UTC

Updated: June 17, 2026 at 02:03 AM UTC

3 products affected across 2 vendorsDebian LinuxSimplesamlphpSAML2

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Severity

N/A

Exploit prediction

EPSS 1%

Description

HTTPRedirect.php in the saml2 library in SimpleSAMLphp before 1.15.4 has an incorrect check of return values in the signature validation utilities, allowing an attacker to get invalid signatures accepted as valid by forcing an error during validation. This occurs because of a dependency on PHP functionality that interprets a -1 error code as a true boolean value.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Debian Linux · Debiandrupal

95%

7.0

SAML2 · Simplesamlphp

95%

1.0.0 ≤ v < 1.10.62.0.0 ≤ v < 2.3.83.0.0 ≤ v < 3.1.4

Affected range stops below 1.10.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 2.3.8, so it looks safe — our inference, not a vendor statement

Affected range stops below 3.1.4, so it looks safe — our inference, not a vendor statement

Simplesamlphp · Simplesamlphp

95%

v < 1.15.4

Affected range stops below 1.15.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

x_refsource_CONFIRMPatch

Source: [email protected]

https://github.com/simplesamlphp/saml2/commit/4f6af7f69f29df8555a18b9bb7b646906b45924d

Mailing Listx_refsource_MLISTThird Party Advisory

Source: [email protected]

https://lists.debian.org/debian-lts-announce/2018/03/msg00017.html

x_refsource_CONFIRMVendor Advisory

Source: [email protected]

https://simplesamlphp.org/security/201803-01

CVSS

6.8MEDIUM[email protected]

Confidentiality: PARTIAL
Integrity: PARTIAL
Availability: PARTIAL

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-347

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