CVE-2011-2500 Auth bypass in n/a

What is CVE-2011-2500?

CVE-2011-2500 is a high-severity authentication bypass vulnerability in n/a, published on 15 Feb 2014. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The host_reliable_addrinfo function in support/export/hostname.c in nfs-utils before 1.2.4 does not properly use DNS to verify access to NFS exports, which allows remote attackers to mount filesystems by establishing crafted DNS A and PTR records.

Weakness: CWE-264

Which versions are affected by CVE-2011-2500?

It affects 1 product.

Products include Linux-Nfs Nfs-Utils.

How do I fix CVE-2011-2500?

Upgrade to a fixed version.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2011-2500 being exploited?

There is no known exploitation of CVE-2011-2500 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2003-0252 Memory corruption in n/a Critical 9.8
• CVE-2025-12801 Nfs-utils: rpc.mountd in the nfs-utils privilege escalation Medium 6.5
• CVE-2019-3689 nfs-utils: root-owned files stored in insecure /var/lib/nfs directory Medium 5.1
• CVE-2011-1749 Denial of service in n/a Low 3.3
• CVE-2013-1923 Information disclosure in n/a Low 3.2

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2011-2500, GHSA-crxh-9828-m763.