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Oracle Linux: CVE-2023-38710: ELSA-2023-6549: libreswan security update (MODERATE) (Multiple Advisories)

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Oracle Linux: CVE-2023-38710: ELSA-2023-6549:libreswan security update (MODERATE) (Multiple Advisories)

Severity
7
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:C)
Published
08/08/2023
Created
11/24/2023
Added
11/22/2023
Modified
01/07/2025

Description

An issue was discovered in Libreswan before 4.12. When an IKEv2 Child SA REKEY packet contains an invalid IPsec protocol ID number of 0 or 1, an error notify INVALID_SPI is sent back. The notify payload's protocol ID is copied from the incoming packet, but the code that verifies outgoing packets fails an assertion that the protocol ID must be ESP (2) or AH(3) and causes the pluto daemon to crash and restart. NOTE: the earliest affected version is 3.20. An assertion failure flaw was found in the Libreswan package that occurs when processing IKEv2 REKEY requests. When an IKEv2 Child SA REKEY packet contains an invalid IPsec protocol ID number of 0 or 1, an error notification INVALID_SPI is sent back. The notify payload's protocol ID is copied from the incoming packet, but the code that verifies outgoing packets fails an assertion that the protocol ID must be ESP (2) or AH(3). This flaw allows a malicious client or attacker to send a malformed IKEv2 REKEY packet, causing a crash and restarting the libreswan pluto daemon. When sent continuously, this could lead to a denial of service attack.

Solution(s)

  • oracle-linux-upgrade-libreswan

References

  • https://attackerkb.com/topics/cve-2023-38710
  • CVE - 2023-38710
  • ELSA-2023-6549
  • ELSA-2023-7052
  • 查看数 700
  • 已创建
  • 最后回复

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