False positive: GHSA-v5h6-c2hv-hv3r (CVE-2024-27280) ruby2.5-stdlib in SLES 15.5 Ecosystem

[sekveaja]

What happened:

Scan on image that has ruby2.5-stdlib-2.5.9-150000.4.29.1.x86_64.noarch installed.
It generates vulnerability:

NAME INSTALLED FIXED-IN TYPE VULNERABILITY SEVERITY
stringio 0.0.1 3.0.1.1 gem GHSA-v5h6-c2hv-hv3r High
webrick 1.4.2.1 1.6.1 gem GHSA-gwfg-cqmg-cf8f High

JSON format:

"vulnerability": {
"id": "GHSA-v5h6-c2hv-hv3r",
"dataSource": "GHSA-v5h6-c2hv-hv3r",
"namespace": "github:language:ruby",
"severity": "High",
"urls": [
"https://github.com/advisories/GHSA-v5h6-c2hv-hv3r"
],
"description": "StringIO buffer overread vulnerability",
:
:
"relatedVulnerabilities": [
{
"id": "CVE-2024-27280",
"dataSource": "https://nvd.nist.gov/vuln/detail/CVE-2024-27280",
"namespace": "nvd:cpe",
"severity": "Unknown",

:
:
"artifact": {
"id": "cd8bdb8fd0bf6563",
"name": "stringio",
"version": "0.0.1",
"type": "gem",
"locations": [
{
"path": "/usr/lib64/ruby/gems/2.5.0/specifications/default/stringio-0.0.1.gemspec",

What you expected to happen:

According to SUSE Advisory on CVE-2024-27280
Ruby and Ruby2.5 is Not affected, therefore, Grype should not generate vulnarability.

See with this link: https://www.suse.com/security/cve/CVE-2024-27280.html

SUSE Linux Enterprise Server 15 SP5 ruby Not affected
SUSE Linux Enterprise Server 15 SP5 ruby2.5 Not affected

How to reproduce it (as minimally and precisely as possible):

1. Create the Dockerfile with this content:

FROM registry.suse.com/suse/sle15:15.5
RUN zypper in -y --no-recommends ruby2.5-stdlib=2.5.9-150000.4.29.1
ENTRYPOINT [""]
CMD ["bash"]

2. Build an image from Dockerfile

$ docker build -t "suse15.5_ruby2.5-stdlib:v1" .

3. Test with Grype now

$ grype --distro sles:15.5 suse15.5_ruby2.5-stdlib:v1

NAME INSTALLED FIXED-IN TYPE VULNERABILITY SEVERITY
stringio 0.0.1 3.0.1.1 gem GHSA-v5h6-c2hv-hv3r High
webrick 1.4.2.1 1.6.1 gem GHSA-gwfg-cqmg-cf8f High

Anything else we need to know?:

Environment:
$ grype --version
grype 0.78.0

In container image eco-system:

bash-4.4$ cat /etc/release
NAME="SLES"
VERSION="15-SP5"
VERSION_ID="15.5"
PRETTY_NAME="SUSE Linux Enterprise Server 15 SP5"
ID="sles"
ID_LIKE="suse"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:suse:sles:15:sp5"
DOCUMENTATION_URL="https://documentation.suse.com/"

[kzantow]

Blocked by anchore/vunnel#626