CVE-2018-9860 — Off-by-one Error in Project Botan

CWE-193 — Off-by-one Error5 documents5 sources
Severity
7.5HIGHNVD
EPSS
0.5%
top 34.06%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Botan Project BotanDebian Botan
Timeline
PublishedApr 12
Latest updateMay 13

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.

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶debiandebian/botan< botan 2.4.0-6 (bookworm)
▶NVDbotan_project/botan1.11.32 — 2.6.0
▶Debianbotan_project/botan< 2.4.0-6+2

🔴Vulnerability Details

2
GHSA
GHSA-3qgv-jw3w-gq48: An issue was discovered in Botan 1↗2022-05-13
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OSV
CVE-2018-9860: An issue was discovered in Botan 1↗2018-04-12
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📋Vendor Advisories

1
Debian
CVE-2018-9860: botan - An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0. An off-by-one...↗2018
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💬Community

1
Bugzilla
CVE-2018-9860 botan: off-by-one error when processing malformed TLS-CBC ciphertext↗2018-04-18
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