CVE-2019-10216

Publication date 12 August 2019

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

In ghostscript before version 9.50, the .buildfont1 procedure did not properly secure its privileged calls, enabling scripts to bypass `-dSAFER` restrictions. An attacker could abuse this flaw by creating a specially crafted PostScript file that could escalate privileges and access files outside of restricted areas.

From the Ubuntu Security Team

Netanel Fisher discovered that the font handler in Ghostscript did not properly restrict privileged calls when '-dSAFER' restrictions were in effect. If a user or automated system were tricked into processing a specially crafted file, a remote attacker could possibly use this issue to access arbitrary files.

Status

Package Ubuntu Release Status
ghostscript 19.04 disco
Fixed 9.26~dfsg+0-0ubuntu7.2
18.04 LTS bionic
Fixed 9.26~dfsg+0-0ubuntu0.18.04.10
16.04 LTS xenial
Fixed 9.26~dfsg+0-0ubuntu0.16.04.10
14.04 LTS trusty Not in release

Patch details

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

Package Patch details
ghostscript

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

References

Related Ubuntu Security Notices (USN)

    • USN-4092-1
    • Ghostscript vulnerability
    • 12 August 2019

Other references