CVE-2016-2338 — CRITICAL (9.8)

Vulnerability Description

An exploitable heap overflow vulnerability exists in the Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function heap buffer "head" allocation is made based on tags array length. Specially constructed object passed as element of tags array can increase this array size after mentioned allocation and cause heap overflow.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ruby-Lang	Ruby	2.2.2
Debian	Debian Linux	8.0

Related Weaknesses (CWE)

CWE-787

References

http://www.talosintelligence.com/reports/TALOS-2016-0032/ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00032.htmlMailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20221228-0005/Third Party Advisory
http://www.talosintelligence.com/reports/TALOS-2016-0032/ExploitThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/03/msg00032.htmlMailing ListThird Party Advisory
https://security.netapp.com/advisory/ntap-20221228-0005/Third Party Advisory

FAQ

What is CVE-2016-2338?

CVE-2016-2338 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An exploitable heap overflow vulnerability exists in the Psych::Emitter start_document function of Ruby. In Psych::Emitter start_document function heap buffer "head" allocation is made based on tags a...

How severe is CVE-2016-2338?

CVE-2016-2338 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2016-2338?

Check the references section above for vendor advisories and patch information. Affected products include: Ruby-Lang Ruby, Debian Debian Linux.