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ALPINE-CVE-2018-8778

ALPINE-CVE-2018-8778 PUBLISHED CVSS 7.5 HIGH

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.

Risk Scores

CVSS 3.0
7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Products

VendorProductVersions
Alpine:v3.6ruby0, 2.4.3-r0, 2.4.2-r0
Alpine:v3.9ruby*, *, 0
Alpine:v3.10ruby2.0.0_p0-r0, 1.8.7, 1.8.7
Alpine:v3.7ruby2.4.3-r0, 2.4.1-r5, 2.4.1-r2
Alpine:v3.19ruby1.9.3_p327-r0, 0, 2.5.0-r1
Alpine:v3.24ruby0
Alpine:v3.21ruby0, 0, 0
Alpine:v3.15ruby*, 0, 1.8.7
Alpine:v3.20ruby0, 0, 0
Alpine:v3.8ruby2.5.0-r0, 2.4.3-r0, 2.4.2-r1
Alpine:v3.22ruby0, 0, 0
Alpine:v3.18ruby0, 1.8.7, 1.8.7
Alpine:v3.16ruby1.8.7_p299-r0, 0, 1.8.7
Alpine:v3.14ruby2.1.5-r0, 2.5.0-r1, 2.5.0-r0
Alpine:v3.17ruby2.4.3-r0, 0, 1.8.7
Alpine:v3.11ruby2.1.5-r0, 0, 2.5.0-r1
Alpine:v3.13ruby0, 2.4.0-r3, 2.4.1-r1
Alpine:v3.5ruby1.8.7, 1.8.7, 1.8.7
Alpine:v3.4ruby1.8.7_p160-r3, 0, 1.8.7
Alpine:v3.23ruby0, 0, 0

…and 1 more

Timeline

  • Apr 3, 2018 CVE Published
  • Apr 30, 2026 Distribution Patch
  • Jun 9, 2026 CVE Updated
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