Description
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.
Problem types
CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CWE-1335: Incorrect Bitwise Shift of Integer
Product status
References
github.com/...n1-der/security/advisories/GHSA-p4qw-7j9g-5h53
github.com/...ommit/b2bc9032cbe19755d234a27d79e47a7e52993af8
Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.
