CVE-2022-2085
What it is
A NULL pointer dereference vulnerability was found in Ghostscript, which occurs when it tries to render a large number of bits in memory. When allocating a buffer device, it relies on an init_device_procs defined for the device that uses it as a prototype that depends upon the number of bits per pixel. For bpp > 64, mem_x_device is used and does not have an init_device_procs defined. This flaw allows an attacker to parse a large number of bits (more than 64 bits per pixel), which triggers a NULL pointer dereference flaw, causing an application to crash.
At a glance
- Exploitability
- Can be exploited locally on the machine without logging in, but needs a user to act. High risk of service disruption.
- Exploit odds
- 1.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.4% in the next 30 days (EPSS).
- Severity: 5.5 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.4% · EPSS, next 30 days
- Weakness
- CWE-476 · NULL pointer dereference
- Record status
- Modified
Affected
- Artifex Ghostscript 9.55.0
- Fedoraproject Fedora 35
- Fedoraproject Fedora 36
Attack profile CVSS 3.1 · 5.5
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-2085.md and follow it. Check whether this project is affected by CVE-2022-2085. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://bugs.ghostscript.com/show_bug.cgi?id=704945
- https://bugzilla.redhat.com/show_bug.cgi?id=2095261
- https://bugs.ghostscript.com/show_bug.cgi?id=704945
- https://bugzilla.redhat.com/show_bug.cgi?id=2095261
References
- http://git.ghostscript.com/?p=ghostpdl.git%3Bh=ae1061d948d88667bdf51d47d918c4684d0f67df
- https://bugs.ghostscript.com/show_bug.cgi?id=704945
- https://bugzilla.redhat.com/show_bug.cgi?id=2095261
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERSZX5LKDWAHZWJYBMP2E2UHOPUCDEGV/
- https://security.gentoo.org/glsa/202211-11
- https://security.gentoo.org/glsa/202309-03
- http://git.ghostscript.com/?p=ghostpdl.git%3Bh=ae1061d948d88667bdf51d47d918c4684d0f67df
- https://bugs.ghostscript.com/show_bug.cgi?id=704945
- https://bugzilla.redhat.com/show_bug.cgi?id=2095261
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ERSZX5LKDWAHZWJYBMP2E2UHOPUCDEGV/
- https://security.gentoo.org/glsa/202211-11
- https://security.gentoo.org/glsa/202309-03