ts-asn1-der has Incorrect DER Encoding of Numbers Leading to Denial of Service and Incorrect Value Representation

Description

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.

Recommendation

Update the @apeleghq/asn1-der package to the latest compatible version. Followings are version details:

• Affected version(s): < 1.0.4
• Patched version(s): 1.0.4

References

• GHSA-p4qw-7j9g-5h53
• CVE-2025-32029
• CWE-1335
• CWE-835
• CAPEC-310
• OWASP 2021-A6

Related Issues

• parse-duration has a Regex Denial of Service that results in event loop delay and out of memory - CVE-2025-25283
• markdown-it is has a Regular Expression Denial of Service (ReDoS) - CVE-2026-2327
• @mozilla/readability Denial of Service through Regex - CVE-2025-2792
• string-math's string-math.js vulnerability can cause Regex Denial of Service (ReDoS) - CVE-2025-45143

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Tags:

npm

@apeleghq/asn1-der