AIKIDO-2026-482067
spomky-labs/pki-framework is vulnerable to Uncontrolled Resource Consumption
75
High Risk
This Affects:
spomky-labs/pki-frameworkTL;DR
DER decoder loops accumulate untrusted continuation octets without bounds, including decodeLongFormTag() in Identifier.php and the sub-identifier loops in ObjectIdentifier.php and RelativeOID.php. Each step rebuilds a BigInteger, so a long run of octets costs work quadratic in its length during certificate parsing, before any signature is checked. A few kilobytes of crafted DER cost minutes of CPU. The fix bounds the octet counts and rejects oversized fields.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you decode untrusted ASN.1/DER, certificates, CSRs, or PEM data.
Background info
spomky-labs/pki-framework is vulnerable to Uncontrolled Resource Consumption in versions 1.0.0 - 1.6.1.
How to fix this
Upgrade the spomky-labs/pki-framework library to the patch version.
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