What’s Vulnerable › Vulnerabilities

CVE-2018-14622

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-08-30 · updated 2026-06-17
• Weakness: CWE-252

Description

A null-pointer dereference vulnerability was found in libtirpc before version 0.3.3-rc3. The return value of makefd_xprt() was not checked in all instances, which could lead to a crash when the server exhausted the maximum number of available file descriptors. A remote attacker could cause an rpc-based application to crash by flooding it with new connections.

Affected products

• Canonical Ubuntu Linux: 14.04, 16.04, 18.04
• Debian Linux: 8.0
• [UNKNOWN] libtirpc: before 0.3.3 — fixed in 0.3.3
• Red Hat Enterprise Linux: 7.0
• RedHat Enterprise Linux Desktop: 7.0
• RedHat Enterprise Linux Server Aus: 7.4
• RedHat Enterprise Linux Server Eus: 7.4, 7.5, 7.6
• RedHat Enterprise Linux Workstation: 7.0

How to fix

Upgrade to a fixed version: [UNKNOWN] libtirpc 0.3.3. Check the vendor advisory for mitigations.

References

• http://git.linux-nfs.org/?p=steved/libtirpc.git%3Ba=commit%3Bh=1c77f7a869bdea2a34799d774460d1f9983d45f0
• https://access.redhat.com/errata/RHBA-2017:1991
• https://bugzilla.novell.com/show_bug.cgi?id=968175
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14622
• https://lists.debian.org/debian-lts-announce/2018/08/msg00034.html
• https://usn.ubuntu.com/3759-1/
• https://usn.ubuntu.com/3759-2/
• http://git.linux-nfs.org/?p=steved/libtirpc.git%3Ba=commit%3Bh=1c77f7a869bdea2a34799d774460d1f9983d45f0
• https://access.redhat.com/errata/RHBA-2017:1991
• https://bugzilla.novell.com/show_bug.cgi?id=968175
• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14622
• https://lists.debian.org/debian-lts-announce/2018/08/msg00034.html

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