CVE-2023-47038 Perl: write past buffer end via illegal user-defined unicode property
High 7.0
Published
Updated
Check this codebase for CVE-2023-47038 and fix it if it is affected.
What it is: CVE-2023-47038 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 18 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-47038 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-2023-47038/ (Markdown: https://insights.sbomify.com/CVE-2023-47038/index.md)
Attackers can trigger a heap buffer overflow via crafted regular expressions in Perl, potentially leading to code execution or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-47038?
CVE-2023-47038 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 18 Dec 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability was found in perl 5.30.0 through 5.38.0. This issue occurs when a crafted regular expression is compiled by perl, which can allow an attacker controlled byte buffer overflow in a heap allocated buffer.
Which versions are affected by CVE-2023-47038?
It affects 5 products.
Linux distribution packages (40)
perl AlmaLinux:8 | All versions | 4:5.32.1-473.module_el8.10.0+3779+d5938d28 |
perl-Algorithm-Diff AlmaLinux:8 | All versions | 1.1903-10.module_el8.6.0+2766+8bf0b7ce |
perl-Archive-Tar AlmaLinux:8 | All versions | 2.38-3.module_el8.6.0+2766+8bf0b7ce |
perl-Archive-Zip AlmaLinux:8 | All versions | 1.68-3.module_el8.6.0+2766+8bf0b7ce |
perl-Attribute-Handlers AlmaLinux:8 | All versions | 1.01-473.module_el8.10.0+3779+d5938d28 |
perl-AutoLoader AlmaLinux:8 | All versions | 5.74-473.module_el8.10.0+3779+d5938d28 |
perl-AutoSplit AlmaLinux:8 | All versions | 5.74-473.module_el8.10.0+3779+d5938d28 |
perl-B AlmaLinux:8 | All versions | 1.80-473.module_el8.10.0+3779+d5938d28 |
perl-Benchmark AlmaLinux:8 | All versions | 1.23-473.module_el8.10.0+3779+d5938d28 |
perl-CPAN AlmaLinux:8 | All versions | 2.28-5.module_el8.6.0+2766+8bf0b7ce |
perl-CPAN-DistnameInfo AlmaLinux:8 | All versions | 0.12-13.module_el8.6.0+2766+8bf0b7ce |
perl-CPAN-Meta AlmaLinux:8 | All versions | 2.150010-397.module_el8.6.0+2766+8bf0b7ce |
perl-CPAN-Meta-Requirements AlmaLinux:8 | All versions | 2.140-397.module_el8.6.0+2766+8bf0b7ce |
perl-CPAN-Meta-YAML AlmaLinux:8 | All versions | 0.018-1001.module_el8.6.0+2766+8bf0b7ce |
perl-Carp AlmaLinux:8 | All versions | 1.50-439.module_el8.6.0+2766+8bf0b7ce |
perl-Class-Struct AlmaLinux:8 | All versions | 0.66-473.module_el8.10.0+3779+d5938d28 |
perl-Compress-Bzip2 AlmaLinux:8 | All versions | 2.28-2.module_el8.6.0+2766+8bf0b7ce |
perl-Compress-Bzip2 AlmaLinux:8 | All versions | 2.28-2.module_el8.6.0+3181+91434291 |
perl-Compress-Raw-Bzip2 AlmaLinux:8 | All versions | 2.096-1.module_el8.6.0+2766+8bf0b7ce |
perl-Compress-Raw-Bzip2 AlmaLinux:8 | All versions | 2.096-1.module_el8.6.0+3181+91434291 |
perl-Compress-Raw-Lzma AlmaLinux:8 | All versions | 2.096-1.module_el8.6.0+2766+8bf0b7ce |
perl-Compress-Raw-Lzma AlmaLinux:8 | All versions | 2.096-1.module_el8.6.0+3181+91434291 |
perl-Compress-Raw-Zlib AlmaLinux:8 | All versions | 2.096-2.module_el8.10.0+3779+d5938d28 |
perl-Config-Extensions AlmaLinux:8 | All versions | 0.03-473.module_el8.10.0+3779+d5938d28 |
perl-Config-Perl-V AlmaLinux:8 | All versions | 0.32-441.module_el8.6.0+2766+8bf0b7ce |
perl-DBM_Filter AlmaLinux:8 | All versions | 0.06-473.module_el8.10.0+3779+d5938d28 |
perl-DB_File AlmaLinux:8 | All versions | 1.855-1.module_el8.6.0+2766+8bf0b7ce |
perl-DB_File AlmaLinux:8 | All versions | 1.855-1.module_el8.6.0+3181+91434291 |
perl-Data-Dumper AlmaLinux:8 | All versions | 2.174-440.module_el8.6.0+2766+8bf0b7ce |
perl-Data-Dumper AlmaLinux:8 | All versions | 2.174-440.module_el8.6.0+3181+91434291 |
perl-Data-OptList AlmaLinux:8 | All versions | 0.110-7.module_el8.6.0+2766+8bf0b7ce |
perl-Data-Section AlmaLinux:8 | All versions | 0.200007-8.module_el8.6.0+2766+8bf0b7ce |
perl-Devel-PPPort AlmaLinux:8 | All versions | 3.62-1.module_el8.6.0+2766+8bf0b7ce |
perl-Devel-PPPort AlmaLinux:8 | All versions | 3.62-1.module_el8.6.0+3181+91434291 |
perl-Devel-Peek AlmaLinux:8 | All versions | 1.28-473.module_el8.10.0+3779+d5938d28 |
perl-Devel-SelfStubber AlmaLinux:8 | All versions | 1.06-473.module_el8.10.0+3779+d5938d28 |
perl-Devel-Size AlmaLinux:8 | All versions | 0.83-3.module_el8.6.0+2766+8bf0b7ce |
perl-Devel-Size AlmaLinux:8 | All versions | 0.83-3.module_el8.6.0+3181+91434291 |
perl-Digest AlmaLinux:8 | All versions | 1.20-1.module_el8.6.0+2766+8bf0b7ce |
perl-Digest-MD5 AlmaLinux:8 | All versions | 2.58-1.module_el8.6.0+2766+8bf0b7ce |
Products include Fedoraproject Fedora, Perl Perl, Redhat Enterprise Linux, Redhat Enterprise Linux Aus, Redhat Enterprise Linux Eus.
How do I fix CVE-2023-47038?
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-2023-47038 being exploited?
There is no known exploitation of CVE-2023-47038 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALPINE-CVE-2023-47038, ALSA-2024:2228, ALSA-2024:3128, BELL-CVE-2023-47038, CLEANSTART-2026-ZY99559, CVE-2023-47100 and 11 more.