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| Rule General Information |
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| Release Date: | 2019-06-27 | |
| Rule Name: | FreeBSD NFS Server nfsrvd_readdirplus Denial-of-Service Vulnerability -4 (CVE-2018-17159) | |
| Severity: | ||
| CVE ID: | ||
| Rule Protection Details |
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| Description: | In FreeBSD before 11.2-STABLE(r340854) and 11.2-RELEASE-p5, the NFS server lacks a bounds check in the READDIRPLUS NFS request. Unprivileged remote users with access to the NFS server can cause a resource exhaustion by forcing the server to allocate an arbitrarily large memory allocation. | |
| Impact: | An attacker can launch a denial of service attack by exploiting the vulnerability successfully. | |
| Affected OS: | Windows, Linux, FreeBSD, Solaris, Other Unix, Network Device, Mac OS, iOS, Android, Others | |
| Reference: | SecurityFocusBID:106192 SecurityTrackerID:1042164 https://secuniaresearch.flexerasoftware.com/secunia_research/2018-24/ https://security.freebsd.org/advisories/FreeBSD-SA-18:13.nfs.asc |
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| Solutions |
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| The vendors have released upgrade patches to fix vulnerabilities, please visit: https://www.freebsd.org/security/advisories/FreeBSD-SA-18:13.nfs.asc |