CVE-2025-49601

描述

In MbedTLS 3.3.0 before 3.6.4, mbedtls_lms_import_public_key does not check that the input buffer is at least 4 bytes before reading a 32-bit field, allowing a possible out-of-bounds read on truncated input. Specifically, an out-of-bounds read in mbedtls_lms_import_public_key allows context-dependent attackers to trigger a crash or limited adjacent-memory disclosure by supplying a truncated LMS (Leighton-Micali Signature) public-key buffer under four bytes. An LMS public key starts with a 4-byte type indicator. The function mbedtls_lms_import_public_key reads this type indicator before validating the size of its input.

如何修補 CVE-2025-49601

要修補 CVE-2025-49601,請將受影響套件升級到下列已修補版本。

• —升級至 3.6.4-r0 或更新版本
• —升級至 3.6.4-1 或更新版本

CVE-2025-49601 正在被利用嗎?

低 — EPSS 為 0.3%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• from 0, < 3.6.4-r0
• from 0, < 3.6.4-1

CVSS 分數

參考連結(2)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2025-49601
• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2025-49601