7.5

CVE-2018-9860: botan_project botan Off-by-one Error

CVSS: 7.5v3.0HighModified
AliasesALPINE-CVE-2018-9860UBUNTU-CVE-2018-9860DEBIAN-CVE-2018-9860
Published 12-04-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-9860 is a high (CVSS 7.5) Off-by-one Error vulnerability in botan_project botan. EPSS estimates a 1.36% chance of exploitation in the next 30 days, higher than 71.3% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.0 (NVD)
EPSS score
1.36%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
OPENSUSE-SU-2024:10594-1

Timeline

  1. 12-04-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

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 metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

1.36%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

+0.04 pp

From 1.32% on 21-09-2026

21-09-202621-10-2026
EPSS score
1.36%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Ubuntu2 products
  • botanAll versions (No fix recorded)
  • botan1.10All versions (No fix recorded)
Alpine1 product
  • botan≥ 1.11.32, < 2.6.0-r0
Botan_project1 product
  • botan≥ 1.11.32, < 2.6.0
Debian1 product
  • botan< 2.4.0-6

4 vendors · 5 products

References

7 links