CVE-2020-12723 Memory corruption in n/a
High 7.5
Published
Updated
Check this codebase for CVE-2020-12723 and fix it if it is affected.
What it is: CVE-2020-12723 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 5 Jun 2020. 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-2020-12723 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-2020-12723/ (Markdown: https://insights.sbomify.com/CVE-2020-12723/index.md)
A buffer overflow in Perl's regex compiler allows attackers to execute arbitrary code or cause denial of service via crafted regular expressions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-12723?
CVE-2020-12723 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 5 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
regcomp.c in Perl before 5.30.3 allows a buffer overflow via a crafted regular expression because of recursive S_study_chunk calls.
Weakness: CWE-120
Which versions are affected by CVE-2020-12723?
It affects 16 products.
Linux distribution packages (40)
perl Red Hat:enterprise_linux:8::appstream | All versions | 4:5.26.3-417.el8_3 |
perl-Attribute-Handlers Red Hat:enterprise_linux:8::appstream | All versions | 0:0.99-417.el8_3 |
perl-Devel-Peek Red Hat:enterprise_linux:8::appstream | All versions | 0:1.26-417.el8_3 |
perl-Devel-Peek-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:1.26-417.el8_3 |
perl-Devel-SelfStubber Red Hat:enterprise_linux:8::appstream | All versions | 0:1.06-417.el8_3 |
perl-ExtUtils-Embed Red Hat:enterprise_linux:8::appstream | All versions | 0:1.34-417.el8_3 |
perl-ExtUtils-Miniperl Red Hat:enterprise_linux:8::appstream | All versions | 0:1.06-417.el8_3 |
perl-IO-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:1.38-417.el8_3 |
perl-Locale-Maketext-Simple Red Hat:enterprise_linux:8::appstream | All versions | 1:0.21-417.el8_3 |
perl-Memoize Red Hat:enterprise_linux:8::appstream | All versions | 0:1.03-417.el8_3 |
perl-Module-Loaded Red Hat:enterprise_linux:8::appstream | All versions | 1:0.08-417.el8_3 |
perl-Net-Ping Red Hat:enterprise_linux:8::appstream | All versions | 0:2.55-417.el8_3 |
perl-Pod-Html Red Hat:enterprise_linux:8::appstream | All versions | 0:1.22.02-417.el8_3 |
perl-SelfLoader Red Hat:enterprise_linux:8::appstream | All versions | 0:1.23-417.el8_3 |
perl-Test Red Hat:enterprise_linux:8::appstream | All versions | 0:1.30-417.el8_3 |
perl-Time-Piece Red Hat:enterprise_linux:8::appstream | All versions | 0:1.31-417.el8_3 |
perl-Time-Piece-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 0:1.31-417.el8_3 |
perl-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 4:5.26.3-417.el8_3 |
perl-debugsource Red Hat:enterprise_linux:8::appstream | All versions | 4:5.26.3-417.el8_3 |
perl-devel Red Hat:enterprise_linux:8::appstream | All versions | 4:5.26.3-417.el8_3 |
perl-interpreter-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 4:5.26.3-417.el8_3 |
perl-libnetcfg Red Hat:enterprise_linux:8::appstream | All versions | 4:5.26.3-417.el8_3 |
perl-libs-debuginfo Red Hat:enterprise_linux:8::appstream | All versions | 4:5.26.3-417.el8_3 |
perl-open Red Hat:enterprise_linux:8::appstream | All versions | 0:1.11-417.el8_3 |
perl-tests Red Hat:enterprise_linux:8::appstream | All versions | 4:5.26.3-417.el8_3 |
perl-utils Red Hat:enterprise_linux:8::appstream | All versions | 0:5.26.3-417.el8_3 |
perl Red Hat:enterprise_linux:8::baseos | All versions | 4:5.26.3-417.el8_3 |
perl-Devel-Peek-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1.26-417.el8_3 |
perl-Errno Red Hat:enterprise_linux:8::baseos | All versions | 0:1.28-417.el8_3 |
perl-IO Red Hat:enterprise_linux:8::baseos | All versions | 0:1.38-417.el8_3 |
perl-IO-Zlib Red Hat:enterprise_linux:8::baseos | All versions | 1:1.10-417.el8_3 |
perl-IO-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1.38-417.el8_3 |
perl-Math-Complex Red Hat:enterprise_linux:8::baseos | All versions | 0:1.59-417.el8_3 |
perl-Time-Piece-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:1.31-417.el8_3 |
perl-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 4:5.26.3-417.el8_3 |
perl-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 4:5.26.3-417.el8_3 |
perl-interpreter Red Hat:enterprise_linux:8::baseos | All versions | 4:5.26.3-417.el8_3 |
perl-interpreter-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 4:5.26.3-417.el8_3 |
perl-libs Red Hat:enterprise_linux:8::baseos | All versions | 4:5.26.3-417.el8_3 |
perl-libs-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 4:5.26.3-417.el8_3 |
Products include Fedoraproject Fedora, Netapp Oncommand Workflow Automation, Netapp Snap Creator Framework, Opensuse Leap, Oracle Communications Billing and Revenue Management, Oracle Communications Diameter Signaling Router and 10 more.
How do I fix CVE-2020-12723?
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-2020-12723 being exploited?
There is no known exploitation of CVE-2020-12723 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as ALPINE-CVE-2020-12723, CLEANSTART-2026-PL35996, CLSA-2022-1657559570, CLSA-2022-1657561005, DEBIAN-CVE-2020-12723, RHSA-2021:0557 and 2 more.