CVE-2023-3777
Use-after-free in Linux kernel's netfilter: nf_tables component
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation.
When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances.
We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.
Una vulnerabilidad de Use-After-Free en el componente netfilter: nf_tables del kernel de Linux puede explotarse para lograr una escalada de privilegios local. Cuando nf_tables_delrule() vacía las reglas de la tabla, no se verifica si la cadena está vinculada y la regla del propietario de la cadena también puede liberar los objetos en determinadas circunstancias. Recomendamos actualizar al pasado commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.
A use-after-free flaw was found in the Linux kernel's netfilter: nf_tables component, which can be exploited to achieve local privilege escalation. When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound, and the chain's owner rule can release the objects in certain circumstances.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2023-07-19 CVE Reserved
- 2023-08-30 CVE Published
- 2023-09-12 EPSS Updated
- 2024-08-02 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-416: Use After Free
CAPEC
- CAPEC-233: Privilege Escalation
References (7)
URL | Tag | Source |
---|---|---|
http://packetstormsecurity.com/files/175072/Kernel-Live-Patch-Security-Notice-LSN-0098-1.html | Third Party Advisory | |
http://packetstormsecurity.com/files/175963/Kernel-Live-Patch-Security-Notice-LSN-0099-1.html | ||
https://www.debian.org/security/2023/dsa-5492 | Third Party Advisory |
URL | Date | SRC |
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URL | Date | SRC |
---|---|---|
https://access.redhat.com/security/cve/CVE-2023-3777 | 2024-01-25 | |
https://bugzilla.redhat.com/show_bug.cgi?id=2237750 | 2024-01-25 |
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" | < 5.9.0 Search vendor "Linux" for product "Linux Kernel" and version " < 5.9.0" | - |
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Linux Search vendor "Linux" | Linux Kernel Search vendor "Linux" for product "Linux Kernel" | >= 6.0 < 6.5 Search vendor "Linux" for product "Linux Kernel" and version " >= 6.0 < 6.5" | - |
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Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 12.0 Search vendor "Debian" for product "Debian Linux" and version "12.0" | - |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | esm |
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | esm |
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04" | lts |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 20.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "20.04" | lts |
Affected
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Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 22.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "22.04" | lts |
Affected
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