Vulnerability · Published Dec 21, 2020 · Assigned by redhat
CVE-2020-27846
Critical 9.8
In plain English
A critical-severity security flaw in crewjam/saml. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 4.9% (higher than 92% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)4.9%top 7.8% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A signature verification vulnerability exists in crewjam/saml. This flaw allows an attacker to bypass SAML Authentication. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/crewjam/saml | 0.4.3 | GHSA-4hq8-gmxx-h6w9 |
| Go | github.com/crewjam/saml | 0.4.3 | GO-2021-0058 |
| Rocky Linux:8 | grafana | 0:7.3.6-2.el8 | RLSA-2021:1859 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | crewjam/saml | grafana-7.3.6, grafana-7.2.3, grafana-6.7.5, github.com/crewjam/saml-0.4.3 |
Weakness: CWE-115
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1907670 x_refsource_MISC
- https://mattermost.com/blog/coordinated-disclosure-go-xml-vulnerabilities/ x_refsource_MISC
- https://github.com/crewjam/saml/security/advisories/GHSA-4hq8-gmxx-h6w9 x_refsource_MISC
- https://grafana.com/blog/2020/12/17/grafana-6.7.5-7.2.3-and-7.3.6-released-with-important-security-fix-for-grafana-enterprise/ x_refsource_MISC
- FEDORA-2020-968067abfa vendor-advisory, x_refsource_FEDORA
- FEDORA-2020-64e54abd9f vendor-advisory, x_refsource_FEDORA
- https://security.netapp.com/advisory/ntap-20210205-0002/ x_refsource_CONFIRM