CVE-2018-8777
High
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 can pass a large HTTP request with a crafted header to WEBrick server or a crafted body to WEBrick server/handler and cause a denial of service (memory consumption).
SeverityHigh
CVSS7.5
Exploit probability—
Product
Ruby
PublishedApr 3, 2018
First seenApr 3, 2018
How to fix
Update
- ruby-lang ruby2.2.10, 2.3.7, 2.4.4, 2.5.1 or later
Vendor advisories
- usn.ubuntu.com/3685-1/
- access.redhat.com/errata/RHSA-2018:3729
- access.redhat.com/errata/RHSA-2018:3730
- access.redhat.com/errata/RHSA-2018:3731
- debian.org/security/2018/dsa-4259
- access.redhat.com/errata/RHSA-2019:2028
- access.redhat.com/errata/RHSA-2020:0542
- access.redhat.com/errata/RHSA-2020:0591
- access.redhat.com/errata/RHSA-2020:0663
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ruby-lang ruby | 2.2.0 ≤ v < 2.2.10, 2.3.0 ≤ v < 2.3.7, 2.4.0 ≤ v < 2.4.4, 2.5.0 ≤ v < 2.5.1, 2.6.0 | 2.2.10, 2.3.7, 2.4.4, 2.5.1 |
| debian debian_linux | 7.0, 8.0, 9.0 | — |
| canonical ubuntu_linux | 14.04, 16.04, 17.10 | — |
| redhat enterprise_linux | 6.0, 7.0, 7.4, 7.5, 7.6 | — |
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