GHSA-xhmf-mmv2-4hhx

Dashboard / Vulnerabilities / GHSA-xhmf-mmv2-4hhx

GHSA-xhmf-mmv2-4hhx

Summary: Go-CVSS has Out-of-bounds Read vulnerability in ParseVector function

Details: ### Impact When a full CVSS v2.0 vector string is parsed using `ParseVector`, an Out-of-Bounds Read is possible due to a lack of tests. The Go module will then panic. ### Patches The problem is patched in tag `v0.4.0`, by the commit `d9d478ff0c13b8b09ace030db9262f3c2fe031f4`. ### Workarounds The only way to avoid it is by parsing CVSS v2.0 vector strings that does not have all attributes defined (e.g. `AV:N/AC:L/Au:N/C:P/I:P/A:C/E:U/RL:OF/RC:C/CDP:MH/TD:H/CR:M/IR:M/AR:M`). ### References N/A ### CPE v2.3 As stated in [SECURITY.md](https://github.com/pandatix/go-cvss/blob/master/SECURITY.md), the CPE v2.3 to refer to this Go module is `cpe:2.3:a:pandatix:go_cvss:*:*:*:*:*:*:*:*`. The entry has already been requested to the NVD CPE dictionnary. ### Exploit example ```go package main import ( "log" gocvss20 "github.com/pandatix/go-cvss/20" ) func main() { _, err := gocvss20.ParseVector("AV:N/AC:L/Au:N/C:P/I:P/A:C/E:U/RL:OF/RC:C/CDP:MH/TD:H/CR:M/IR:M/AR:M") if err != nil { log.Fatal(err) } } ``` When ran, the following trace is returned. ``` panic: runtime error: index out of range [3] with length 3 goroutine 1 [running]: github.com/pandatix/go-cvss/20.ParseVector({0x4aed6c?, 0x0?}) /home/lucas/go/pkg/mod/github.com/pandatix/[email protected]/20/cvss20.go:54 +0x578 main.main() /media/lucas/HDD-K/Documents/cve-2022-xxxxx/main.go:10 +0x25 exit status 2 ``` ### For more information If you have any questions or comments about this advisory: * Open an issue in [pandatix/go-cvss](https://github.com/pandatix/go-cvss/issues) * Email me at [[email protected]](mailto:[email protected])

References: https://github.com/pandatix/go-cvss/security/advisories/GHSA-xhmf-mmv2-4hhx, https://nvd.nist.gov/vuln/detail/CVE-2022-39213, https://github.com/pandatix/go-cvss/commit/d9d478ff0c13b8b09ace030db9262f3c2fe031f4, https://github.com/pandatix/go-cvss, https://github.com/pandatix/go-cvss/blob/master/SECURITY.md, https://pkg.go.dev/vuln/GO-2022-1002