CVE-2018-8778: 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…

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 vector

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

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

High

Integrity

None

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)7.5% · higher than 94% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

DL

Debian Linux · Debian

7.0; 8.0; 9.0 · source: NVD

EL

Enterprise Linux · Redhat

6.0; 7.0; 7.4; 7.5; 7.6 · source: NVD

RU

Ruby · Ruby-lang

2.2.0 before 2.2.10; 2.3.0 before 2.3.7; 2.4.0 before 2.4.4; 2.5.0 before 2.5.1; 2.6.0 · source: NVD

UL

Ubuntu Linux · Canonical

14.04; 16.04; 17.10 · source: NVD