Vulnerability · Published Apr 7, 2025 · Assigned by GitHub_M
CVE-2025-32029ts-asn1-der has Incorrect DER Encoding of Numbers Leading to Denial of Service and Incorrect Value Representation
Medium 6.9
In plain English
A medium-severity infinite loop in ts-asn1-der from ApelegHQ. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | @apeleghq/asn1-der | 1.0.4 | GHSA-p4qw-7j9g-5h53 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ApelegHQ | ts-asn1-der | < 1.0.4 |
Weakness: CWE-835, CWE-1335 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N