CVE-2019-18408 Use after free in n/a
High 7.5
Published
Updated
Check this codebase for CVE-2019-18408 and fix it if it is affected.
What it is: CVE-2019-18408 is a high-severity use after free vulnerability in Canonical Ubuntu Linux, published on 24 Oct 2019. 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-2019-18408 in the wild and no public exploit code.
Affected product: Canonical Ubuntu Linux. 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-2019-18408/ (Markdown: https://insights.sbomify.com/CVE-2019-18408/index.md)
A use-after-free vulnerability in libarchive allows attackers to execute arbitrary code or cause a denial of service via crafted RAR archives.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-18408?
CVE-2019-18408 is a high-severity use after free vulnerability in Canonical Ubuntu Linux, published on 24 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
archive_read_format_rar_read_data in archive_read_support_format_rar.c in libarchive before 3.4.0 has a use-after-free in a certain ARCHIVE_FAILED situation, related to Ppmd7_DecodeSymbol.
Weakness: CWE-416
Which versions are affected by CVE-2019-18408?
It affects 3 products.
Linux distribution packages (40)
bsdcpio Red Hat:enterprise_linux:7::client | All versions | 0:3.1.2-14.el7_7 |
bsdtar Red Hat:enterprise_linux:7::client | All versions | 0:3.1.2-14.el7_7 |
libarchive Red Hat:enterprise_linux:7::client | All versions | 0:3.1.2-14.el7_7 |
libarchive-debuginfo Red Hat:enterprise_linux:7::client | All versions | 0:3.1.2-14.el7_7 |
libarchive-devel Red Hat:enterprise_linux:7::client | All versions | 0:3.1.2-14.el7_7 |
bsdcpio Red Hat:enterprise_linux:7::computenode | All versions | 0:3.1.2-14.el7_7 |
bsdtar Red Hat:enterprise_linux:7::computenode | All versions | 0:3.1.2-14.el7_7 |
libarchive Red Hat:enterprise_linux:7::computenode | All versions | 0:3.1.2-14.el7_7 |
libarchive-debuginfo Red Hat:enterprise_linux:7::computenode | All versions | 0:3.1.2-14.el7_7 |
libarchive-devel Red Hat:enterprise_linux:7::computenode | All versions | 0:3.1.2-14.el7_7 |
bsdcpio Red Hat:enterprise_linux:7::server | All versions | 0:3.1.2-14.el7_7 |
bsdtar Red Hat:enterprise_linux:7::server | All versions | 0:3.1.2-14.el7_7 |
libarchive Red Hat:enterprise_linux:7::server | All versions | 0:3.1.2-14.el7_7 |
libarchive-debuginfo Red Hat:enterprise_linux:7::server | All versions | 0:3.1.2-14.el7_7 |
libarchive-devel Red Hat:enterprise_linux:7::server | All versions | 0:3.1.2-14.el7_7 |
bsdcpio Red Hat:enterprise_linux:7::workstation | All versions | 0:3.1.2-14.el7_7 |
bsdtar Red Hat:enterprise_linux:7::workstation | All versions | 0:3.1.2-14.el7_7 |
libarchive Red Hat:enterprise_linux:7::workstation | All versions | 0:3.1.2-14.el7_7 |
libarchive-debuginfo Red Hat:enterprise_linux:7::workstation | All versions | 0:3.1.2-14.el7_7 |
libarchive-devel Red Hat:enterprise_linux:7::workstation | All versions | 0:3.1.2-14.el7_7 |
bsdcat-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:3.3.2-8.el8_1 |
bsdcpio-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:3.3.2-8.el8_1 |
bsdtar Red Hat:enterprise_linux:8::baseos | All versions | 0:3.3.2-8.el8_1 |
bsdtar-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:3.3.2-8.el8_1 |
libarchive Red Hat:enterprise_linux:8::baseos | All versions | 0:3.3.2-8.el8_1 |
libarchive-debuginfo Red Hat:enterprise_linux:8::baseos | All versions | 0:3.3.2-8.el8_1 |
libarchive-debugsource Red Hat:enterprise_linux:8::baseos | All versions | 0:3.3.2-8.el8_1 |
bsdcat-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:3.3.2-8.el8_1 |
bsdcpio-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:3.3.2-8.el8_1 |
bsdtar-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:3.3.2-8.el8_1 |
libarchive-debuginfo Red Hat:enterprise_linux:8::crb | All versions | 0:3.3.2-8.el8_1 |
libarchive-debugsource Red Hat:enterprise_linux:8::crb | All versions | 0:3.3.2-8.el8_1 |
libarchive-devel Red Hat:enterprise_linux:8::crb | All versions | 0:3.3.2-8.el8_1 |
bsdcat-debuginfo Red Hat:rhel_e4s:8.0::baseos | All versions | 0:3.3.2-4.el8_0 |
bsdcpio-debuginfo Red Hat:rhel_e4s:8.0::baseos | All versions | 0:3.3.2-4.el8_0 |
bsdtar Red Hat:rhel_e4s:8.0::baseos | All versions | 0:3.3.2-4.el8_0 |
bsdtar-debuginfo Red Hat:rhel_e4s:8.0::baseos | All versions | 0:3.3.2-4.el8_0 |
libarchive Red Hat:rhel_e4s:8.0::baseos | All versions | 0:3.3.2-4.el8_0 |
libarchive-debuginfo Red Hat:rhel_e4s:8.0::baseos | All versions | 0:3.3.2-4.el8_0 |
libarchive-debugsource Red Hat:rhel_e4s:8.0::baseos | All versions | 0:3.3.2-4.el8_0 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Libarchive Libarchive.
How do I fix CVE-2019-18408?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2019-18408 being exploited?
There is no known exploitation of CVE-2019-18408 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as ALPINE-CVE-2019-18408, DEBIAN-CVE-2019-18408, DLA-1971-1, DSA-4557-1, GHSA-4hj2-55w3-4qwh, RHSA-2020:0203 and 4 more.