CVEvulnerability

CVE-2018-9860

7.5 HIGH Published 2018-04-12 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2018-04-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.0 ([email protected])
7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-193

Description

An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0. An off-by-one error when processing malformed TLS-CBC ciphertext could cause the receiving side to include in the HMAC computation exactly 64K bytes of data following the record buffer, aka an over-read. The MAC comparison will subsequently fail and the connection will be closed. This could be used for denial of service. No information leak occurs.

Affected configurations

• botan project botan (>= 1.11.32 < 2.6.0)

Related

Weakness · CWE (1)

  • CWE-193 Off-by-one Error weakness

References