VulnerabilityModified
CVE-2021-4235
Due to unbounded alias chasing, a maliciously crafted YAML file can cause the system to consume significant system resources.
MEDIUM 5.5EPSS 0.41%
Does this matter?
Lower severity and a low EPSS score (0.41%). Track it; it rarely justifies an emergency change on its own.
Description
Due to unbounded alias chasing, a maliciously crafted YAML file can cause the system to consume significant system resources. If parsing user input, this may be used as a denial of service vector.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- EPSS
- 0.41% probability · 35th percentile
- CISA KEV
- Not listed
- Affected
- yaml project/yaml
- Source
- security@golang.org
References
- https://github.com/go-yaml/yaml/commit/bb4e33bf68bf89cad44d386192cbed201f35b241Patch, Third Party Advisory
- https://github.com/go-yaml/yaml/pull/375Exploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/07/msg00001.html
- https://pkg.go.dev/vuln/GO-2021-0061Third Party Advisory
- https://github.com/go-yaml/yaml/commit/bb4e33bf68bf89cad44d386192cbed201f35b241Patch, Third Party Advisory
- https://github.com/go-yaml/yaml/pull/375Exploit, Patch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/07/msg00001.html
- https://pkg.go.dev/vuln/GO-2021-0061Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.