CyberRota Analysis
AI-GeneratedZeek versions prior to 8.0.9 are vulnerable to a null pointer dereference in the Kerberos protocol analyzer, which can be exploited by unauthenticated remote attackers to crash the sensor by sending a specially crafted KRB_ERROR message. This vulnerability allows attackers to disrupt service with a single UDP or TCP packet to port 88, making it critical for organizations using Zeek for network security monitoring to prioritize updates to version 8.0.9 or later. Security teams should assess their exposure to this vulnerability and implement necessary patches to mitigate potential disruptions.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Zeek before 8.0.9 contains a null pointer dereference vulnerability in its Kerberos protocol analyzer that allows unauthenticated remote attackers to crash the sensor by sending a crafted KRB_ERROR message with error-code 25 (KDC_ERR_PREAUTH_REQUIRED) containing a PA-DATA element with padata-type 2, 3, 11, or 19. Attackers can exploit a parser and analyzer state mismatch where proc_padata() dereferences an uninitialized pa_data_element field selected by the wrong parsing arm, triggering a crash via a single UDP or TCP packet to port 88 without any credentials or prior authentication.
Related CVEs
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