Cloud Vulnerability DB
A community-led vulnerabilities database
Vulnerability DatabaseCVE-2020-23911
CVE-2020-23911:
NixOS vulnerability analysis and mitigation
Overview
A NULL pointer dereference vulnerability was discovered in asn1c through version 0.9.28. The vulnerability exists in the function _default_error_logger() located in asn1fix.c, which allows attackers to cause a Denial of Service condition (NVD, CVE Mitre).
Technical details
The vulnerability is caused by a NULL pointer dereference in the _default_error_logger() function within asn1fix.c. The issue manifests during the processing of certain inputs, leading to a segmentation fault. The vulnerability has been assigned a CVSS v3.1 Base Score of 5.5 (MEDIUM) with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H (NVD).
Impact
When successfully exploited, this vulnerability allows attackers to cause a Denial of Service condition by triggering a crash in the application. The impact is limited to availability, with no direct impact on confidentiality or integrity (NVD).
Mitigation and workarounds
Users should upgrade to a version newer than asn1c v0.9.28 once a patch is available. As of the vulnerability disclosure, all versions through v0.9.28 are affected (NVD).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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