CVE-2024-2511

CVE Details

Release Date:

2024-04-08

Description

Issue summary: Some non-default TLS server configurations can cause unbounded\nmemory growth when processing TLSv1.3 sessions\nImpact summary: An attacker may exploit certain server configurations to trigger\nunbounded memory growth that would lead to a Denial of Service\nThis problem can occur in TLSv1.3 if the non-default SSL_OP_NO_TICKET option is\nbeing used (but not if early_data support is also configured and the default\nanti-replay protection is in use). In this case, under certain conditions, the\nsession cache can get into an incorrect state and it will fail to flush properly\nas it fills. The session cache will continue to grow in an unbounded manner. A\nmalicious client could deliberately create the scenario for this failure to\nforce a Denial of Service. It may also happen by accident in normal operation.\nThis issue only affects TLS servers supporting TLSv1.3. It does not affect TLS\nclients.\nThe FIPS modules in 3.2, 3.1 and 3.0 are not affected by this issue. OpenSSL\n1.0.2 is also not affected by this issue.

See more information about CVE-2024-2511 from MITRE CVE dictionary and NIST NVD

CVSS Scoring

NOTE: The following CVSS v3.1 metrics and score provided are preliminary and subject to review.

Base Score:	3.7	CVSS Vector:	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Attack Vector:	Network	Attack Complexity:	High
Privileges Required:	None	User Interaction:	None
Scope:	Unchanged	Confidentiality Impact:	None
Integrity Impact:	None	Availability Impact:	Low

Errata information

Platform	Errata	Release Date
Oracle Linux version 9 (openssl)	ELSA-2024-9333	2024-11-14
Oracle Linux version 9 (openssl-fips-provider)	ELSA-2024-9333	2024-11-14