ApelegHQ ts-asn1-der up to 1.0.3 absolute infinite loop

Summaryinfo

A vulnerability, which was classified as problematic, was found in ApelegHQ ts-asn1-der up to 1.0.3. Impacted is an unknown function. Such manipulation of the argument absolute leads to infinite loop. This vulnerability is traded as CVE-2025-32029. An attack has to be approached locally. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in ApelegHQ ts-asn1-der up to 1.0.3. It has been rated as problematic. Affected by this issue is some unknown functionality. The manipulation of the argument absolute with an unknown input leads to a infinite loop vulnerability. Using CWE to declare the problem leads to CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. Impacted is availability. CVE summarizes:

ts-asn1-der is a collection of utility classes to encode ASN.1 data following DER rule. Incorrect number DER encoding can lead to denial on service for absolute values in the range 2**31 -- 2**32 - 1. The arithmetic in the numBitLen didn't take into account that values in this range could result in a negative result upon applying the >> operator, leading to an infinite loop. The issue is patched in version 1.0.4. If upgrading is not an option, the issue can be mitigated by validating inputs to Asn1Integer to ensure that they are not smaller than -2**31 + 1 and no larger than 2**31 - 1.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2025-32029 since 04/01/2025. The exploitation is known to be easy. The attack needs to be approached locally. There are known technical details, but no exploit is available.

Upgrading to version 1.0.4 eliminates this vulnerability. Applying the patch b2bc9032cbe19755d234a27d79e47a7e52993af8 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• ApelegHQ

Name

• ts-asn1-der

Version

• 1.0.0
• 1.0.1
• 1.0.2
• 1.0.3

License

• open-source

Website

• Product: https://github.com/ApelegHQ/ts-asn1-der/

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