Off-by-one Error Affecting botan package, versions <2.4.0-6
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN10-BOTAN-268769
- published12 Apr 2018
- disclosed12 Apr 2018
Introduced: 12 Apr 2018
CVE-2018-9860 (opens in a new tab)How to fix?
Upgrade Debian:10 botan to version 2.4.0-6 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream botan package and not the botan package as distributed by Debian.
See How to fix? for Debian:10 relevant fixed versions and status.
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.