Ruby Buffer Under-Read Vulnerability in String#unpack Method
CVE-2018-8778

7.5HIGH

Key Information:

Vendor

Ruby-lang

Status
Ruby
Vendor
CVE Published:
3 April 2018

What is CVE-2018-8778?

In versions prior to 2.2.10, 2.3.7, 2.4.4, 2.5.1, and 2.6.0-preview1 of the Ruby programming language, an attacker with control over the unpacking format can exploit the String#unpack method to trigger a buffer under-read. This vulnerability can result in significant information disclosure, exposing sensitive data through carefully crafted input.

References

https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-r...
x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:3729
vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3626-1/
vendor-advisoryx_refsource_UBUNTU

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.