{"id":"GHSA-p4qw-7j9g-5h53","summary":"ts-asn1-der has Incorrect DER Encoding of Numbers Leading to Denial of Service and Incorrect Value Representation","details":"### Impact\n\nIncorrect `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 `\u003e\u003e` operator, leading to an infinite loop.\n\nIn addition, `number` encoding had a few other issues that resulted it in it not encoding values correctly.\n\n### Patches\n\nThe issue is patched in version `1.0.4`. Users are recommended to upgrade as soon as possible.\n\n### Workarounds\n\nIf 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.\n\nIf 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.\n\n### References\n\nN/A","aliases":["CVE-2025-32029"],"modified":"2025-04-08T17:49:39Z","published":"2025-04-07T21:11:19Z","database_specific":{"github_reviewed_at":"2025-04-07T21:11:19Z","github_reviewed":true,"nvd_published_at":"2025-04-07T21:15:42Z","severity":"MODERATE","cwe_ids":["CWE-1335","CWE-835"]},"references":[{"type":"WEB","url":"https://github.com/ApelegHQ/ts-asn1-der/security/advisories/GHSA-p4qw-7j9g-5h53"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-32029"},{"type":"WEB","url":"https://github.com/ApelegHQ/ts-asn1-der/commit/b2bc9032cbe19755d234a27d79e47a7e52993af8"},{"type":"PACKAGE","url":"https://github.com/ApelegHQ/ts-asn1-der"}],"affected":[{"package":{"name":"@apeleghq/asn1-der","ecosystem":"npm","purl":"pkg:npm/%40apeleghq/asn1-der"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.0.4"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/04/GHSA-p4qw-7j9g-5h53/GHSA-p4qw-7j9g-5h53.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V4","score":"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"}]}