CVE-2021-38593 Memory corruption in n/a
High 7.5
Published
Updated
Check this codebase for CVE-2021-38593 and fix it if it is affected.
What it is: CVE-2021-38593 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 12 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-38593 in the wild and no public exploit code.
Affected product: Fedoraproject Fedora. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2021-38593/ (Markdown: https://insights.sbomify.com/CVE-2021-38593/index.md)
An out-of-bounds write in Qt's path conversion allows attackers to execute arbitrary code or cause denial of service via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-38593?
CVE-2021-38593 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 12 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Qt 5.x before 5.15.6 and 6.x through 6.1.2 has an out-of-bounds write in QOutlineMapper::convertPath (called from QRasterPaintEngine::fill and QPaintEngineEx::stroke).
Weakness: CWE-787
Which versions are affected by CVE-2021-38593?
It affects 2 products.
Linux distribution packages (39)
qt5-qtbase AlmaLinux:8 | All versions | 5.15.2-4.el8 |
qt5-qtbase-common AlmaLinux:8 | All versions | 5.15.2-4.el8 |
qt5-qtbase-devel AlmaLinux:8 | All versions | 5.15.2-4.el8 |
qt5-qtbase-examples AlmaLinux:8 | All versions | 5.15.2-4.el8 |
qt5-qtbase-gui AlmaLinux:8 | All versions | 5.15.2-4.el8 |
qt5-qtbase-mysql AlmaLinux:8 | All versions | 5.15.2-4.el8 |
qt5-qtbase-odbc AlmaLinux:8 | All versions | 5.15.2-4.el8 |
qt5-qtbase-postgresql AlmaLinux:8 | All versions | 5.15.2-4.el8 |
qt5-qtbase-private-devel AlmaLinux:8 | All versions | 5.15.2-4.el8 |
qt5-qtbase-static AlmaLinux:8 | All versions | 5.15.2-4.el8 |
qt5-qtbase Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-common Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-devel-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-examples Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-examples-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-gui Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-gui-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-mysql Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-mysql-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-odbc Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-odbc-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-postgresql Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-postgresql-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-private-devel Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-tests-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-debugsource Red Hat:enterprise_linux:8::crb | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-devel-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-examples-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-gui-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-mysql-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-odbc-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-postgresql-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-static Red Hat:enterprise_linux:8::crb | All versions | 0:5.15.2-4.el8 |
qt5-qtbase-tests-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:5.15.2-4.el8 |
qt5-qtbase Rocky Linux:8 | All versions | 0:5.15.2-4.el8 |
Products include Fedoraproject Fedora, Qt Qt.
How do I fix CVE-2021-38593?
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-2021-38593 being exploited?
There is no known exploitation of CVE-2021-38593 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALSA-2022:1796, AZL-34211, AZL-6838, GHSA-qfcf-2jfw-4cm8, OESA-2022-2059, OESA-2022-2060 and 3 more.