CVE-2025-32029 – @apeleghq/asn1-der

Package

Manager: npm
Name: @apeleghq/asn1-der
Vulnerable Version: >=0 <1.0.4

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:R

CVSS v4.0: 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

EPSS: 7e-05 pctl0.00377

Details

ts-asn1-der has Incorrect DER Encoding of Numbers Leading to Denial of Service and Incorrect Value Representation ### Impact 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. In addition, `number` encoding had a few other issues that resulted it in it not encoding values correctly. ### Patches The issue is patched in version `1.0.4`. Users are recommended to upgrade as soon as possible. ### Workarounds 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`. Although `Asn1Integer` supports `bigint` inputs, some additional implementation issues make using `bigint` as a mitigation inviable, as it will result in incorrect values. If upgrading is not an option and range checks are impractical or undesirable, input to `Asn1Integer` can be provided as a buffer to be used directly. Note that this requires computing the correct DER encoding externally. ### References N/A

Metadata

Created: 2025-04-07T21:11:19Z
Modified: 2025-04-08T17:49:39Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-p4qw-7j9g-5h53/GHSA-p4qw-7j9g-5h53.json
CWE IDs: ["CWE-1335", "CWE-835"]
Alternative ID: GHSA-p4qw-7j9g-5h53
Finding: F138
Auto approve: 1