distro-tools/apollo/server/routes/api_osv.py

301 lines
8.6 KiB
Python

import datetime
from typing import TypeVar, Generic, Optional
from fastapi import APIRouter, Depends
from fastapi.exceptions import HTTPException
from fastapi_pagination import create_page
from fastapi_pagination.links import Page
from pydantic import BaseModel
from slugify import slugify
from apollo.db import Advisory, RedHatIndexState
from apollo.db.advisory import fetch_advisories
from apollo.rpmworker.repomd import EPOCH_RE, NEVRA_RE
from apollo.server.settings import UI_URL, get_setting
from common.fastapi import Params, to_rfc3339_date
router = APIRouter(tags=["osv"])
T = TypeVar("T")
class Pagination(Page[T], Generic[T]):
last_updated_at: Optional[str]
class Config:
allow_population_by_field_name = True
fields = {"items": {"alias": "advisories"}}
class OSVSeverity(BaseModel):
type: str
score: str
class OSVPackage(BaseModel):
ecosystem: str
name: str
purl: Optional[str] = None
class OSVEvent(BaseModel):
introduced: Optional[str] = None
fixed: Optional[str] = None
last_affected: Optional[str] = None
limit: Optional[str] = None
class OSVRangeDatabaseSpecific(BaseModel):
yum_repository: str
class OSVRange(BaseModel):
type: str
repo: Optional[str]
events: list[OSVEvent]
database_specific: Optional[OSVRangeDatabaseSpecific]
class OSVEcosystemSpecific(BaseModel):
pass
class OSVAffectedDatabaseSpecific(BaseModel):
pass
class OSVAffected(BaseModel):
package: OSVPackage
ranges: list[OSVRange]
versions: Optional[list[str]]
ecosystem_specific: Optional[OSVEcosystemSpecific]
database_specific: Optional[OSVAffectedDatabaseSpecific]
class OSVReference(BaseModel):
type: str
url: str
class OSVCredit(BaseModel):
name: str
contact: list[str] = None
class OSVDatabaseSpecific(BaseModel):
pass
class OSVAdvisory(BaseModel):
schema_version: str = "1.3.1"
id: str
modified: str
published: str
withdrawn: Optional[str]
aliases: Optional[list[str]]
related: Optional[list[str]]
summary: str
details: str
severity: Optional[list[OSVSeverity]]
affected: list[OSVAffected]
references: list[OSVReference]
credits: list[OSVCredit]
database_specific: Optional[OSVDatabaseSpecific]
def to_osv_advisory(ui_url: str, advisory: Advisory) -> OSVAdvisory:
affected_pkgs = []
vendors = []
pkg_name_map = {}
for pkg in advisory.packages:
if pkg.supported_product.vendor not in vendors:
vendors.append(pkg.supported_product.vendor)
nevra = NEVRA_RE.search(pkg.nevra)
name = nevra.group(1)
arch = nevra.group(5).lower()
product_name = slugify(pkg.product_name)
if pkg.supported_products_rh_mirror:
product_name = f"{pkg.supported_product.variant}:{pkg.supported_products_rh_mirror.match_major_version}"
if product_name not in pkg_name_map:
pkg_name_map[product_name] = {}
if arch not in pkg_name_map[product_name]:
pkg_name_map[product_name][arch] = {}
if name not in pkg_name_map[product_name][arch]:
pkg_name_map[product_name][arch][name] = []
pkg_name_map[product_name][arch][name].append((pkg, nevra))
processed_nvra = {}
for product_name, arches in pkg_name_map.items():
for _, affected_arches in arches.items():
if not affected_arches:
continue
for pkg_name, affected_packages in affected_arches.items():
for pkg in affected_packages:
x = pkg[0]
nevra = pkg[1]
# Only process "src" packages
if nevra.group(5) != "src":
continue
if x.nevra in processed_nvra:
continue
processed_nvra[x.nevra] = True
epoch = nevra.group(2)
ver_rel = f"{epoch}:{nevra.group(3)}-{nevra.group(4)}"
slugified = slugify(x.supported_product.variant)
slugified_distro = slugify(x.product_name)
for arch_, _ in arches.items():
slugified_arch = f"-{slugify(arch_)}"
slugified_distro = slugified_distro.replace(
slugified_arch,
"",
)
purl = f"pkg:rpm/{slugified}/{pkg_name}?distro={slugified_distro}&epoch={epoch}"
affected = OSVAffected(
package=OSVPackage(
ecosystem=product_name,
name=pkg_name,
purl=purl,
),
ranges=[
OSVRange(
type="ECOSYSTEM",
events=[
OSVEvent(introduced="0"),
OSVEvent(fixed=ver_rel),
],
database_specific=OSVRangeDatabaseSpecific(
yum_repository=x.repo_name,
),
)
],
versions=None,
ecosystem_specific=None,
database_specific=None,
)
affected_pkgs.append(affected)
references = [
OSVReference(type="ADVISORY", url=f"{ui_url}/{advisory.name}"),
]
for fix in advisory.fixes:
references.append(OSVReference(type="REPORT", url=fix.source))
osv_credits = [OSVCredit(name=x) for x in vendors]
if advisory.red_hat_advisory:
osv_credits.append(OSVCredit(name="Red Hat"))
# Calculate severity by finding the highest CVSS score
highest_cvss_base_score = 0.0
final_score_vector = None
for x in advisory.cves:
# Convert cvss3_scoring_vector to a float
base_score = x.cvss3_base_score
if base_score and base_score != "UNKNOWN":
base_score = float(base_score)
if base_score > highest_cvss_base_score:
highest_cvss_base_score = base_score
final_score_vector = x.cvss3_scoring_vector
severity = None
if final_score_vector:
severity = [OSVSeverity(type="CVSS_V3", score=final_score_vector)]
return OSVAdvisory(
id=advisory.name,
modified=to_rfc3339_date(advisory.updated_at),
published=to_rfc3339_date(advisory.published_at),
withdrawn=None,
aliases=None,
related=[x.cve for x in advisory.cves],
summary=advisory.synopsis,
details=advisory.description,
severity=severity,
affected=affected_pkgs,
references=references,
credits=osv_credits,
database_specific=None,
)
@router.get(
"/", response_model=Pagination[OSVAdvisory], response_model_exclude_none=True
)
async def get_advisories_osv(
params: Params = Depends(),
product: Optional[str] = None,
before: Optional[datetime.datetime] = None,
after: Optional[datetime.datetime] = None,
cve: Optional[str] = None,
synopsis: Optional[str] = None,
keyword: Optional[str] = None,
severity: Optional[str] = None,
):
fetch_adv = await fetch_advisories(
params.get_size(),
params.get_offset(),
keyword,
product,
before,
after,
cve,
synopsis,
severity,
kind="Security",
fetch_related=True,
)
count = fetch_adv[0]
advisories = fetch_adv[1]
ui_url = await get_setting(UI_URL)
osv_advisories = [to_osv_advisory(ui_url, x) for x in advisories]
page = create_page(osv_advisories, count, params)
state = await RedHatIndexState.first()
page.last_updated_at = (
state.last_indexed_at.isoformat("T").replace(
"+00:00",
"",
)
+ "Z"
)
return page
@router.get(
"/{advisory_id}", response_model=OSVAdvisory, response_model_exclude_none=True
)
async def get_advisory_osv(advisory_id: str):
advisory = (
await Advisory.filter(name=advisory_id, kind="Security")
.prefetch_related(
"packages",
"cves",
"fixes",
"affected_products",
"packages",
"packages__supported_product",
"packages__supported_products_rh_mirror",
)
.get_or_none()
)
if not advisory:
raise HTTPException(404)
ui_url = await get_setting(UI_URL)
return to_osv_advisory(ui_url, advisory)