Cloud Vulnerability DB
A community-led vulnerabilities database
Vulnerability DatabaseCVE-2020-7731
CVE-2020-7731:
vulnerability analysis and mitigation
Overview
This vulnerability (CVE-2020-7731) affects all versions below 0.7.0 of the package github.com/russellhaering/gosaml2. The vulnerability was discovered and disclosed on September 7, 2020, and involves a crash caused by nil-pointer dereference when processing malformed XML signatures (Snyk Report, GitHub Issue).
Technical details
The vulnerability occurs when processing malformed XML signatures in the SAML authentication flow. The issue specifically manifests when unverified assertions have nil parents, leading to a nil pointer dereference in the validation process. The vulnerability has been assigned a CVSS score of 7.5 (High) due to its network attack vector, low attack complexity, and high impact on availability (Snyk Report).
Impact
When exploited, this vulnerability can lead to a Denial of Service (DoS) condition. The attack can cause the system to crash through a nil-pointer dereference, making the service unavailable to legitimate users. The impact is particularly significant as it affects the SAML authentication mechanism, which is critical for user authentication and access control (Snyk Report).
Mitigation and workarounds
The vulnerability has been fixed in version 0.7.0 of the github.com/russellhaering/gosaml2 package. Users are strongly recommended to upgrade to this version or higher to address the security issue (GitHub Release).
Additional resources
Source: This report was generated using AI
Free Vulnerability Assessment
Benchmark your Cloud Security Posture
Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.
Additional Wiz resources
Get a personalized demo
Ready to see Wiz in action?
"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management