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Segfault DoS in mod_auth_openidc

Moderate
zandbelt published GHSA-hjgj-5pf7-fvfm May 16, 2021

Package

mod_auth_openidc

Affected versions

>= 2.4.0 <= 2.4.7

Patched versions

>= 2.4.8

Description

Impact

A crafted POST request can cause the Apache process to crash.

Patches

Upgrade to a version >= 2.4.8

Workarounds

There are no workarounds.

References

https://jvn.jp/en/jp/JVN49704918/index.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20718

For more information

If you have any questions or comments about this advisory:

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVE ID

CVE-2021-20718

Weaknesses

Credits