CVE-2018-9918

Publication date 10 April 2018

Last updated 25 August 2025

Ubuntu priority

Low

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

Description

libqpdf.a in QPDF through 8.0.2 mishandles certain “expected dictionary key but found non-name object” cases, allowing remote attackers to cause a denial of service (stack exhaustion), related to the QPDFObjectHandle and QPDF_Dictionary classes, because nesting in direct objects is not restricted.

Status

Package Ubuntu Release Status
qpdf 18.04 LTS bionic
Not affected
17.10 artful
Fixed 8.0.2-3~17.10.1
16.04 LTS xenial
Fixed 8.0.2-3~16.04.1
14.04 LTS trusty
Fixed 8.0.2-3~14.04.1

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
qpdf

Severity score breakdown

Parameter Value
Base score 7.8 · High
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

Other references