CVE-2023-39193
MEDIUMCVSS 6/10EPSS 0.42%
Last modified
CVE-2023-39193 is a medium-severity vulnerability rated 6/10 on the CVSS scale. A flaw was found in the Netfilter subsystem in the Linux kernel. The sctp_mt_check did not validate the flag_count field. EPSS estimates a 0.42% chance of exploitation in the next 30 days.
Description
A flaw was found in the Netfilter subsystem in the Linux kernel. The sctp_mt_check did not validate the flag_count field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 6.6 |
| Redhat | Enterprise Linux | 8.0 |
| Redhat | Enterprise Linux | 9.0 |
| Fedoraproject | Fedora | 38 |
References
- https://access.redhat.com/security/cve/CVE-2023-39193Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2226787Issue Tracking, Patch, Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-18866/Patch, Third Party Advisory, VDB Entry
- https://access.redhat.com/security/cve/CVE-2023-39193Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2226787Issue Tracking, Patch, Third Party Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-CAN-18866/Patch, Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-39193?
A flaw was found in the Netfilter subsystem in the Linux kernel. The sctp_mt_check did not validate the flag_count field. This flaw allows a local privileged (CAP_NET_ADMIN) attacker to trigger an out-of-bounds read, leading to a crash or information disclosure.
How severe is CVE-2023-39193?
CVE-2023-39193 has a CVSS score of 6/10 (MEDIUM severity). The EPSS model estimates a 0.42% probability of exploitation in the next 30 days.
How do I fix CVE-2023-39193?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Are you affected by CVE-2023-39193?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST