SB2023110766 - Red Hat Enterprise Linux 9 update for krb5

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2023110766

SB2023110766 - Red Hat Enterprise Linux 9 update for krb5

Published: November 7, 2023

Security Bulletin ID SB2023110766
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Access of Uninitialized Pointer (CVE-ID: CVE-2023-36054)

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to the  _xdr_kadm5_principal_ent_rec() function in lib/kadm5/kadm_rpc_xdr.c does not validate the relationship between n_key_data and the key_data array count and frees an uninitialized pointer. A remote user can send a specially crafted request to the application and perform a denial of service (DoS) attack.


2) Double Free (CVE-ID: CVE-2023-39975)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error within the free_req_info(). A remote attacker send a specially crafted request to trigger a double free error and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References