7.5high
CVE-2018-9860
An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0.
Published 8 y ago · modified 4 mo ago · JSON
CVSS
7.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.4%
percentile 72%
Public exploits
0
none known
Summary
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.
Exploit prediction (EPSS)
1.36% probability of exploitation in the next 30 days, higher than 72% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
- CWE-193 Off-by-one Error
References
- bugs.chromium.org /p/oss-fuzz/issues/detail?id=7434 · x_refsource_MISC, x_transferred
- botan.randombit.net /security.html · x_refsource_MISC, x_transferred
Sources
- CVE List: CVE-2018-9860
- NVD: CVE-2018-9860
vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.