GHSA-p4qw-7j9g-5h53

Suggest an improvement
Source
https://github.com/advisories/GHSA-p4qw-7j9g-5h53
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-p4qw-7j9g-5h53/GHSA-p4qw-7j9g-5h53.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-p4qw-7j9g-5h53
Aliases
Published
2025-04-07T21:11:19Z
Modified
2025-04-08T17:49:39Z
Severity
  • 6.9 (Medium) CVSS_V4 - 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 CVSS Calculator
Summary
ts-asn1-der has Incorrect DER Encoding of Numbers Leading to Denial of Service and Incorrect Value Representation
Details

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

Database specific 
{
    "nvd_published_at": "2025-04-07T21:15:42Z",
    "cwe_ids": [
        "CWE-1335",
        "CWE-835"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2025-04-07T21:11:19Z"
}
References

Affected packages

npm / @apeleghq/asn1-der

Package

Name
@apeleghq/asn1-der
View open source insights on deps.dev
Purl
pkg:npm/%40apeleghq/asn1-der

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.0.4