Integer overflow in Pycryptodome

CVE-2018-15560

PyCryptodome before 3.6.6 has an integer overflow in the data_len variable in AESNI.c, related to the AESNI_encrypt and AESNI_decrypt functions, leading to the mishandling of messages shorter than 16 bytes.

Vulnerability class: Integer Overflow

EPSS: 0.018 (75.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2018-15560?
CVE-2018-15560 is a high-severity vulnerability in Pycryptodome, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2018-08-20.
How severe is CVE-2018-15560?
High severity. CVSS v3 base score is 7.5 out of 10.