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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2024-2511 Detail

Description

Issue summary: Some non-default TLS server configurations can cause unbounded memory growth when processing TLSv1.3 sessions Impact summary: An attacker may exploit certain server configurations to trigger unbounded memory growth that would lead to a Denial of Service This problem can occur in TLSv1.3 if the non-default SSL_OP_NO_TICKET option is being used (but not if early_data support is also configured and the default anti-replay protection is in use). In this case, under certain conditions, the session cache can get into an incorrect state and it will fail to flush properly as it fills. The session cache will continue to grow in an unbounded manner. A malicious client could deliberately create the scenario for this failure to force a Denial of Service. It may also happen by accident in normal operation. This issue only affects TLS servers supporting TLSv1.3. It does not affect TLS clients. The FIPS modules in 3.2, 3.1 and 3.0 are not affected by this issue. OpenSSL 1.0.2 is also not affected by this issue.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://www.openwall.com/lists/oss-security/2024/04/08/5 CVE
https://github.com/openssl/openssl/commit/7e4d731b1c07201ad9374c1cd9ac5263bdf35bce CVE, OpenSSL Software Foundation
https://github.com/openssl/openssl/commit/b52867a9f618bb955bed2a3ce3db4d4f97ed8e5d CVE, OpenSSL Software Foundation
https://github.com/openssl/openssl/commit/e9d7083e241670332e0443da0f0d4ffb52829f08 CVE, OpenSSL Software Foundation
https://github.openssl.org/openssl/extended-releases/commit/5f8d25770ae6437db119dfc951e207271a326640 CVE, OpenSSL Software Foundation
https://lists.debian.org/debian-lts-announce/2024/10/msg00033.html CVE
https://lists.debian.org/debian-lts-announce/2024/11/msg00000.html CVE
https://security.netapp.com/advisory/ntap-20240503-0013/ CVE
https://www.openssl.org/news/secadv/20240408.txt CVE, OpenSSL Software Foundation

Weakness Enumeration

CWE-ID CWE Name Source
CWE-1325 Improperly Controlled Sequential Memory Allocation OpenSSL Software Foundation  

Change History

8 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2024-2511
NVD Published Date:
04/08/2024
NVD Last Modified:
11/03/2025
Source:
OpenSSL Software Foundation