CVE-2024-2511 (GCVE-0-2024-2511)

Vulnerability from cvelistv5 – Published: 2024-04-08 13:51 – Updated: 2026-05-12 11:30
VLAI
Title
Unbounded memory growth with session handling in TLSv1.3
Summary
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.
Severity
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-1325 - Improperly Controlled Sequential Memory Allocation
Assigner
References
Impacted products
Vendor Product Version
OpenSSL OpenSSL Affected: 3.2.0 , < 3.2.2 (semver)
Affected: 3.1.0 , < 3.1.6 (semver)
Affected: 3.0.0 , < 3.0.14 (semver)
Affected: 1.1.1 , < 1.1.1y (custom)
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Siemens RUGGEDCOM RM1224 LTE(4G) EU Affected: 0 , < V8.2 (custom)
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Siemens RUGGEDCOM RM1224 LTE(4G) NAM Affected: 0 , < V8.2 (custom)
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Siemens RUGGEDCOM RST2428P Affected: 0 , < V3.1 (custom)
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Siemens SCALANCE M804PB Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE M812-1 ADSL-Router Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE M816-1 ADSL-Router Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE M826-2 SHDSL-Router Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE M874-2 Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE M874-3 Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE M874-3 3G-Router (CN) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE M876-3 Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE M876-3 (ROK) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE M876-4 Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE M876-4 (EU) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE M876-4 (NAM) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE MUM853-1 (A1) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE MUM853-1 (B1) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE MUM853-1 (EU) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE MUM856-1 (A1) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE MUM856-1 (B1) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE MUM856-1 (CN) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE MUM856-1 (EU) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE MUM856-1 (RoW) Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE S615 EEC LAN-Router Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE S615 LAN-Router Affected: 0 , < V8.2 (custom)
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Siemens SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family Unaffected: 0 , < * (custom)
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Siemens SCALANCE XCM-/XRM-/XCH-/XRH-300 family Affected: 0 , < V3.1 (custom)
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Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
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Date Public
2024-04-08 00:00
Credits
Manish Patidar (Hewlett Packard Enterprise) Matt Caswell
Show details on NVD website
To clipboard 

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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.