CVE-2018-9860 | BDVDB-2026-99294 Detail

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.

Impact#

No impact statement in the source data.

Weaknesses#

No weakness recorded in the source data.

References#

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=7434
https://botan.randombit.net/security.html

Exploit#

No public exploit known

History#

Version 12018-04-12Record published in the CVE List.
Version 22024-08-05Most recent update recorded in the CVE List.