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Bug 883853 (CVE-2022-1471)

Summary: dev-java/snakeyaml: remote code execution via unsafe deserialization
Product: Gentoo Security Reporter: John Helmert III <ajak>
Component: VulnerabilitiesAssignee: Gentoo Security <security>
Severity: major CC: java
Priority: Normal Keywords: PullRequest
Version: unspecified   
Hardware: All   
OS: Linux   
See Also:
Whiteboard: B1 [upstream]
Package list:
Runtime testing required: ---

Description John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2022-12-01 18:06:59 UTC

SnakeYaml's Constructor() class does not restrict types which can be instantiated during deserialization. Deserializing yaml content provided by an attacker can lead to remote code execution. We recommend using SnakeYaml's SafeConsturctor when parsing untrusted content to restrict deserialization.

Not sure we can do anything with no fixed version, mitigation will have to be done in consumers.
Comment 1 Larry the Git Cow gentoo-dev 2023-03-20 07:26:49 UTC
The bug has been referenced in the following commit(s):

commit aee65fdfa0ce1abe59f9f4433f309fda95630e5f
Author:     Volkmar W. Pogatzki <>
AuthorDate: 2023-03-19 14:49:00 +0000
Commit:     Miroslav Šulc <>
CommitDate: 2023-03-20 07:26:41 +0000

    dev-java/snakeyaml: add 2.0 - CVE-2022-1471
    - skips 2 classes in META-INF/versions/9 due to
    Signed-off-by: Volkmar W. Pogatzki <>
    Signed-off-by: Miroslav Šulc <>

 dev-java/snakeyaml/Manifest             |  1 +
 dev-java/snakeyaml/snakeyaml-2.0.ebuild | 76 +++++++++++++++++++++++++++++++++
 2 files changed, 77 insertions(+)
Comment 2 John Helmert III archtester Gentoo Infrastructure gentoo-dev Security 2023-04-19 04:41:55 UTC
Yeah, upstream calls this invalid: