CVE-2021-32489
MEDIUM 4.4EPSS 0.9%
An issue was discovered in the _send_secure_msg() function of Yubico yubihsm-shell through 2.0.3. The function does not correctly validate the embedded length field of an authenticated message received from the device because response_msg.st.len=8 can be accepted but triggers an integer overflow, which causes CRYPTO_cbc128_decrypt (in OpenSSL) to encounter an undersized buffer and experience a segmentation fault. The yubihsm-shell project is included in the YubiHSM 2 SDK product.
- CVSS v3.1
- 4.4 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H - CVSS v3.1
- 4.4 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H - CVSS v2.0
- 3.5 LOW
AV:N/AC:M/Au:S/C:N/I:N/A:P - EPSS
- 0.92% chance of exploitation in the next 30 days, 58th percentile
- Published
- 2021-05-10
- Updated
- 2024-08-03