SB2024032817 - Multiple vulnerabilities in Cisco IOS and IOS XE Software

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Main Vulnerability Database SB2024032817

SB2024032817 - Multiple vulnerabilities in Cisco IOS and IOS XE Software

Published: March 28, 2024

Security Bulletin ID SB2024032817
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Heap-based buffer overflow (CVE-ID: CVE-2024-20307)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green


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

The vulnerability exists due to a boundary error in the IKEv1 fragmentation code. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and cause a denial of service condition on the target system.


2) Buffer Underwrite ('Buffer Underflow') (CVE-ID: CVE-2024-20308)

CWE-ID: CWE-124 - Buffer Underwrite ('Buffer Underflow')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber


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

The vulnerability exists due to a crafted, fragmented IKEv1 packets are not properly reassembled. A remote attacker can send specially crafted UDP packets and cause a denial of service condition on the target system.



Remediation

Install update from vendor's website.

References