CVE-2021-36978 Memory corruption in n/a
A heap-based buffer overflow in QPDF allows attackers to execute arbitrary code or cause denial of service via crafted PDF files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2021-36978?
CVE-2021-36978 is a medium-severity memory corruption vulnerability in n/a, published on 20 Jul 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
QPDF 9.x through 9.1.1 and 10.x through 10.0.4 has a heap-based buffer overflow in Pl_ASCII85Decoder::write (called from Pl_AES_PDF::flush and Pl_AES_PDF::finish) when a certain downstream write fails.
Weakness: CWE-787
Which versions are affected by CVE-2021-36978?
It affects 1 product.
Linux distribution packages (13)
qpdf SUSE:Enterprise Storage 7 | All versions | 9.0.2-150200.3.3.1 |
qpdf SUSE:Linux Enterprise High Performance Computing 15 SP2-ESPOS | All versions | 9.0.2-150200.3.3.1 |
qpdf SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 9.0.2-150200.3.3.1 |
qpdf SUSE:Linux Enterprise Module for Basesystem 15 SP3 | All versions | 9.0.2-150200.3.3.1 |
qpdf SUSE:Linux Enterprise Module for Basesystem 15 SP4 | All versions | 9.0.2-150200.3.3.1 |
qpdf SUSE:Linux Enterprise Server 15 SP2-BCL | All versions | 9.0.2-150200.3.3.1 |
qpdf SUSE:Linux Enterprise Server 15 SP2-LTSS | All versions | 9.0.2-150200.3.3.1 |
qpdf SUSE:Linux Enterprise Server for SAP Applications 15 SP2 | All versions | 9.0.2-150200.3.3.1 |
qpdf SUSE:Manager Proxy 4.1 | All versions | 9.0.2-150200.3.3.1 |
qpdf SUSE:Manager Retail Branch Server 4.1 | All versions | 9.0.2-150200.3.3.1 |
qpdf SUSE:Manager Server 4.1 | All versions | 9.0.2-150200.3.3.1 |
qpdf openSUSE:Leap 15.3 | All versions | 9.0.2-150200.3.3.1 |
qpdf openSUSE:Leap 15.4 | All versions | 9.0.2-150200.3.3.1 |
Products include Qpdf Project Qpdf.
How do I fix CVE-2021-36978?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-36978 being exploited?
There is no known exploitation of CVE-2021-36978 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2021-36978, GHSA-vgrr-57vg-f5rq, SUSE-SU-2022:3248-1, UBUNTU-CVE-2021-36978.