ALPINE-CVE-2018-8778

Advisory lineage Upstream: 1 Downstream: 0
Upstream
CVE-2018-8778
Published: 03 Apr 2018, 22:29
Last modified:08 Jul 2026, 04:31

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
3.0 (osv_alpine)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Apr 2018, 22:29
Published
Vulnerability first disclosed
08 Jul 2026, 04:31
Last Modified
Vulnerability information updated

Description

In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, an attacker controlling the unpacking format (similar to format string vulnerabilities) can trigger a buffer under-read in the String#unpack method, resulting in a massive and controlled information disclosure.

CVSS Metrics

  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Systems

  • alpine•ruby

    < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.5.1-r0 | < 2.3.7-r0 | < 2.3.7-r0 | < 2.4.4-r0 | < 2.4.4-r0 | < 2.5.1-r0 | < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.3.7-r0 | ≥ 2.2.0, < 2.3.7-r0 | ≥ 2.2.0, < 2.4.4-r0 | ≥ 2.2.0, < 2.4.4-r0 | ≥ 2.2.0, < 2.5.1-r0 | ≥ 2.2.0, < 2.5.1-r0

References (1)