openSUSE-SU-2020:1089-1 Security update for perl-YAML-LibYAML
Not scored
Published
Check this codebase for openSUSE-SU-2020:1089-1 and fix it if it is affected.
What it is: openSUSE-SU-2020:1089-1 is an unsafe deserialization vulnerability in perl-YAML-LibYAML, published on 26 Jul 2020.
Exploitation: There is no known exploitation of openSUSE-SU-2020:1089-1 in the wild and no public exploit code.
Affected product: perl-YAML-LibYAML. 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/openSUSE-SU-2020-1089-1/ (Markdown: https://insights.sbomify.com/openSUSE-SU-2020-1089-1/index.md)
An attacker can execute arbitrary code via crafted YAML input due to unsafe object deserialization in the Perl YAML library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Not stated
- Victim action needed
- Not needed
- Fix
- Available
What is openSUSE-SU-2020:1089-1?
openSUSE-SU-2020:1089-1 is an unsafe deserialization vulnerability in perl-YAML-LibYAML, published on 26 Jul 2020.
Official description
This update for perl-YAML-LibYAML fixes the following issues:
perl-YAML-LibYAML was updated to 0.69: [bsc#1173703]
- Security fix: Add $LoadBlessed option to turn on/off loading objects: Default is set to true. Note that, the behavior is unchanged.
- Clarify documentation about exported functions
- Dump() was modifying original data, adding a PV to numbers
- Support standard tags !!str, !!map and !!seq instead of dying.
- Support JSON::PP::Boolean and boolean.pm via $YAML::XS::Boolean.
- Fix regex roundtrip. Fix loading of many regexes.
This update was imported from the SUSE:SLE-15:Update update project.
Which versions are affected by openSUSE-SU-2020:1089-1?
Linux distribution packages (1)
perl-YAML-LibYAML openSUSE:Leap 15.1 | All versions | 0.69-lp151.3.3.1 |
How do I fix openSUSE-SU-2020:1089-1?
Upgrade to a fixed version.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is openSUSE-SU-2020:1089-1 being exploited?
There is no known exploitation of openSUSE-SU-2020:1089-1 in the wild and no public exploit code.