CVE-2023-53333
Vulnerability Scoring
Analysis In Progress
CVE-2023-53333 Vulnerability Analysis & Exploit Details
CVE-2023-53333
Attack Complexity Details
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Attack Complexity:
Attack Complexity Analysis In Progress
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Attack Vector:
Attack Vector Under Analysis
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Privileges Required:
None
No authentication is required for exploitation.
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Scope:
Impact is confined to the initially vulnerable component.
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User Interaction:
None
No user interaction is necessary for exploitation.
CVE-2023-53333 Details
Status: Received on 16 Sep 2025, 17:15 UTC
Published on: 16 Sep 2025, 17:15 UTC
CVSS Release:
CVE-2023-53333 Vulnerability Summary
CVE-2023-53333: In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: dccp: copy entire header to stack buffer, not just basic one Eric Dumazet says: nf_conntrack_dccp_packet() has an unique: dh = skb_header_pointer(skb, dataoff, sizeof(_dh), &_dh); And nothing more is 'pulled' from the packet, depending on the content. dh->dccph_doff, and/or dh->dccph_x ...) So dccp_ack_seq() is happily reading stuff past the _dh buffer. BUG: KASAN: stack-out-of-bounds in nf_conntrack_dccp_packet+0x1134/0x11c0 Read of size 4 at addr ffff000128f66e0c by task syz-executor.2/29371 [..] Fix this by increasing the stack buffer to also include room for the extra sequence numbers and all the known dccp packet type headers, then pull again after the initial validation of the basic header. While at it, mark packets invalid that lack 48bit sequence bit but where RFC says the type MUST use them. Compile tested only. v2: first skb_header_pointer() now needs to adjust the size to only pull the generic header. (Eric) Heads-up: I intend to remove dccp conntrack support later this year.
Assessing the Risk of CVE-2023-53333
Access Complexity Graph
The exploitability of CVE-2023-53333 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).
Exploitability Analysis for CVE-2023-53333
No exploitability data is available for CVE-2023-53333.
Understanding AC and PR
A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.
Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.
Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.
CVSS Score Breakdown Chart
Above is the CVSS Sub-score Breakdown for CVE-2023-53333, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.
CIA Impact Analysis
Below is the Impact Analysis for CVE-2023-53333, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.
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Confidentiality:
None
CVE-2023-53333 does not compromise confidentiality.
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Integrity:
None
CVE-2023-53333 does not impact data integrity.
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Availability:
None
CVE-2023-53333 does not affect system availability.
CVE-2023-53333 References
External References
- https://git.kernel.org/stable/c/26bd1f210d3783a691052c51d76bb8a8bbd24c67
- https://git.kernel.org/stable/c/337fdce450637ea663bc816edc2ba81e5cdad02e
- https://git.kernel.org/stable/c/5c618daa5038712c4a4ef8923905a2ea1b8836a1
- https://git.kernel.org/stable/c/8c0980493beed3a80d6329c44ab293dc8c032927
- https://git.kernel.org/stable/c/9bdcda7abaf22f6453e5b5efb7eb4e524095d5d8
- https://git.kernel.org/stable/c/c052797ac36813419ad3bfa54cb8615db4b41f15
- https://git.kernel.org/stable/c/ff0a3a7d52ff7282dbd183e7fc29a1fe386b0c30
CWE Common Weakness Enumeration
Unknown
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