CVE-2011-1749 Denial of service in n/a
Local attackers can corrupt the /etc/mtab file by exploiting resource limit checks in mount.nfs, potentially causing system instability or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-1749?
CVE-2011-1749 is a low-severity denial of service vulnerability in n/a, published on 26 Feb 2014. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The nfs_addmntent function in support/nfs/nfs_mntent.c in the mount.nsf tool in nfs-utils before 1.2.4 attempts to append to the /etc/mtab file without first checking whether resource limits would interfere, which allows local users to corrupt this file via a process with a small RLIMIT_FSIZE value, a related issue to CVE-2011-1089.
Weakness: CWE-20
Which versions are affected by CVE-2011-1749?
It affects 1 product.
Linux distribution packages (4)
nfs-utils Red Hat:enterprise_linux:5::client | All versions | 1:1.0.9-60.el5 |
nfs-utils-debuginfo Red Hat:enterprise_linux:5::client | All versions | 1:1.0.9-60.el5 |
nfs-utils Red Hat:enterprise_linux:5::server | All versions | 1:1.0.9-60.el5 |
nfs-utils-debuginfo Red Hat:enterprise_linux:5::server | All versions | 1:1.0.9-60.el5 |
Products include Linux-Nfs Nfs-Utils.
How do I fix CVE-2011-1749?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2011-1749 being exploited?
There is no known exploitation of CVE-2011-1749 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2011-1749, GHSA-c72p-cwvx-7724, RHSA-2012:0310.