PT-2025-3838 · Apple · Swift Asn.1

Baarde · Published 2025-01-14 · Updated 2025-01-15 · CVE-2025-0343

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Swift ASN.1 (affected versions not specified)

Description The issue is caused by a confusion in the ASN.1 library, which assumes that certain objects can only be provided in either constructed or primitive forms. This can trigger a preconditionFailure if the constraint is not met. The impact of this is that it can be used as a denial-of-service vector when parsing BER/DER data from unknown sources, such as when parsing TLS certificates. There is no memory-safety issue, and the crash is a graceful one from the Swift runtime.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Weakness Enumeration

CWE-228

Related Identifiers

CVE-2025-0343

GHSA-W8XV-RWGF-4FWH

Affected Products

Swift Asn.1

References · 11

• https://osv.dev/vulnerability/CVE-2025-0343 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-0343 · Security Note
• https://osv.dev/vulnerability/GHSA-w8xv-rwgf-4fwh · Vendor Advisory
• https://github.com/apple/swift-asn1/security/advisories/GHSA-w8xv-rwgf-4fwh · Note
• https://github.com/apple/swift-asn1 · Note
• https://github.com/apple/swift-asn1/commit/ae33e5941bb88d88538d0a6b19ca0b01e6c76dcf · Note
• https://t.me/cvedetector/15401 · Telegram Post
• https://t.me/cvenotify/107467 · Telegram Post
• https://twitter.com/CVEnew/status/1879490168354390017 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1879403014886162461 · Twitter Post
• https://t.me/cvenotify/107414 · Telegram Post