CVE-2023-39192
Kernel: netfilter: xtables out-of-bounds read in u32_match_it()
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
A flaw was found in the Netfilter subsystem in the Linux kernel. The xt_u32 module did not validate the fields in the xt_u32 structure. This flaw allows a local privileged attacker to trigger an out-of-bounds read by setting the size fields with a value beyond the array boundaries, leading to a crash or information disclosure.
Se encontró una falla en el subsistema Netfilter en el kernel de Linux. El módulo xt_u32 no validó los campos en la estructura xt_u32. Esta falla permite a un atacante local privilegiado activar una lectura fuera de límites configurando los campos de tamaño con un valor más allá de los límites de la matriz, lo que provoca un bloqueo o la divulgación de información.
This vulnerability allows local attackers to disclose sensitive information on affected installations of the Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the u32_match_it function. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated data structure. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel.
CVSS Scores
SSVC
- Decision:Track*
Timeline
- 2023-07-25 CVE Reserved
- 2023-09-29 CVE Published
- 2023-10-10 EPSS Updated
- 2024-11-15 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-125: Out-of-bounds Read
CAPEC
References (6)
URL | Tag | Source |
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https://lists.debian.org/debian-lts-announce/2024/01/msg00004.html | ||
https://www.zerodayinitiative.com/advisories/ZDI-CAN-18408 | Third Party Advisory |
URL | Date | SRC |
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URL | Date | SRC |
---|---|---|
https://bugzilla.redhat.com/show_bug.cgi?id=2226784 | 2024-05-22 |
URL | Date | SRC |
---|---|---|
https://access.redhat.com/errata/RHSA-2024:2950 | 2024-05-22 | |
https://access.redhat.com/errata/RHSA-2024:3138 | 2024-05-22 | |
https://access.redhat.com/security/cve/CVE-2023-39192 | 2024-05-22 |
Affected Vendors, Products, and Versions
Vendor | Product | Version | Other | Status | ||||||
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Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | < 6.6 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6" | - |
Affected
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Redhat Search vendor "Redhat" | Enterprise Linux Search vendor "Redhat" for product "Enterprise Linux" | 8.0 Search vendor "Redhat" for product "Enterprise Linux" and version "8.0" | - |
Affected
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Fedoraproject Search vendor "Fedoraproject" | Fedora Search vendor "Fedoraproject" for product "Fedora" | 38 Search vendor "Fedoraproject" for product "Fedora" and version "38" | - |
Affected
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