ID

VAR-202404-2188

CVE

CVE-2024-2511

TITLE

Multiple vulnerabilities in Siemens SINEC OS third-party components

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. The RUGGEDCOM RST2428P is a Layer 2 Ethernet switch based on the SINEC operating system with up to 28 non-blocking interfaces. SCALANCE X switches are used to connect industrial components such as programmable logic controllers (PLCs) or human-machine interfaces (HMIs). Multiple vulnerabilities in third-party components of Siemens' SINEC OS could allow attackers to gain control of the server. ========================================================================== Ubuntu Security Notice USN-6937-1 July 31, 2024 openssl vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS Summary: Several security issues were fixed in OpenSSL. Software Description: - openssl: Secure Socket Layer (SSL) cryptographic library and tools Details: It was discovered that OpenSSL incorrectly handled TLSv1.3 sessions when certain non-default TLS server configurations were in use. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, leading to a denial of service. (CVE-2024-2511) It was discovered that OpenSSL incorrectly handled checking excessively long DSA keys or parameters. A remote attacker could possibly use this issue to cause OpenSSL to consume resources, leading to a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-4603) William Ahern discovered that OpenSSL incorrectly handled certain memory operations in a rarely-used API. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2024-4741) Joseph Birr-Pixton discovered that OpenSSL incorrectly handled calling a certain API with an empty supported client protocols buffer. A remote attacker could possibly use this issue to obtain sensitive information, or cause OpenSSL to crash, resulting in a denial of service. (CVE-2024-5535) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 24.04 LTS libssl3t64 3.0.13-0ubuntu3.2 Ubuntu 22.04 LTS libssl3 3.0.2-0ubuntu1.17 Ubuntu 20.04 LTS libssl1.1 1.1.1f-1ubuntu2.23 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-6937-1 CVE-2024-2511, CVE-2024-4603, CVE-2024-4741, CVE-2024-5535 Package Information: https://launchpad.net/ubuntu/+source/openssl/3.0.13-0ubuntu3.2 https://launchpad.net/ubuntu/+source/openssl/3.0.2-0ubuntu1.17 https://launchpad.net/ubuntu/+source/openssl/1.1.1f-1ubuntu2.23 . The following advisory data is extracted from: https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_9333.json Red Hat officially shut down their mailing list notifications October 10, 2023. Due to this, Packet Storm has recreated the below data as a reference point to raise awareness. It must be noted that due to an inability to easily track revision updates without crawling Red Hat's archive, these advisories are single notifications and we strongly suggest that you visit the Red Hat provided links to ensure you have the latest information available if the subject matter listed pertains to your environment. - Packet Storm Staff ==================================================================== Red Hat Security Advisory Synopsis: Low: openssl and openssl-fips-provider security update Advisory ID: RHSA-2024:9333-03 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2024:9333 Issue date: 2024-11-12 Revision: 03 CVE Names: CVE-2024-2511 ==================================================================== Summary: An update for openssl and openssl-fips-provider is now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Security Fix(es): * openssl: Unbounded memory growth with session handling in TLSv1.3 (CVE-2024-2511) * openssl: Excessive time spent checking DSA keys and parameters (CVE-2024-4603) * openssl: Use After Free with SSL_free_buffers (CVE-2024-4741) * openssl: SSL_select_next_proto buffer overread (CVE-2024-5535) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 9.5 Release Notes linked from the References section

IOT TAXONOMY

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Ubuntu

SOURCES

LAST UPDATE DATE

2026-06-19T20:12:24.053000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE