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CVE-2011-1831· NVD / CVE Program· CNA canonical

utils/mount.ecryptfs_private.c in ecryptfs-utils before 90 does not properly check mountpoint permissions, which allows local users to effec

utils/mount.ecryptfs_private.c in ecryptfs-utils before 90 does not properly check mountpoint permissions, which allows local users to effectively replace any directory with a new filesystem, and consequently gain privileges, via a mount system call.

MediumCVSS 4.6 · v2.0—No exploit Fix available
Published
Feb 15, 2014
Updated
Jun 16, 2026
EPSS
0.4% · 28th percentile
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Action score

18

Monitor

Low priority for now.

CVSS
18 / 40 · 4.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

Affected systems

VendorProduct
ecryptfsecryptfs-utils
ecryptfsecryptfs utils

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • ecryptfs ecryptfs utils58
  • ecryptfs ecryptfs utils59
  • ecryptfs ecryptfs utils60
  • ecryptfs ecryptfs utils61
  • ecryptfs ecryptfs-utilsup to 89 inclusive
  • ecryptfs ecryptfs-utils62
  • ecryptfs ecryptfs-utils63
  • ecryptfs ecryptfs-utils64
  • ecryptfs ecryptfs-utils65
  • ecryptfs ecryptfs-utils66
  • ecryptfs ecryptfs-utils67
  • ecryptfs ecryptfs-utils68
  • ecryptfs ecryptfs-utils69
  • ecryptfs ecryptfs-utils70
  • ecryptfs ecryptfs-utils71
  • ecryptfs ecryptfs-utils72
  • ecryptfs ecryptfs-utils73
  • ecryptfs ecryptfs-utils74
  • ecryptfs ecryptfs-utils75
  • ecryptfs ecryptfs-utils76

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12ecryptfs-utilsbefore 92-192-1
Debian:5.0ecryptfs-utilsbefore 68-1+lenny168-1+lenny1
Debian:6.0ecryptfs-utilsbefore 83-4+squeeze183-4+squeeze1
openSUSE:Tumbleweedecryptfs-utilsbefore 108-2.5108-2.5
Red Hat:enterprise_linux:5::clientecryptfs-utilsbefore 0:75-5.el5_7.20:75-5.el5_7.2
Red Hat:enterprise_linux:5::clientecryptfs-utils-debuginfobefore 0:75-5.el5_7.20:75-5.el5_7.2
Red Hat:enterprise_linux:5::clientecryptfs-utils-guibefore 0:75-5.el5_7.20:75-5.el5_7.2
Red Hat:enterprise_linux:5::client_workstationecryptfs-utils-develbefore 0:75-5.el5_7.20:75-5.el5_7.2
Red Hat:enterprise_linux:6::serverecryptfs-utilsbefore 0:82-6.el6_1.30:82-6.el6_1.3
Red Hat:enterprise_linux:6::serverecryptfs-utils-debuginfobefore 0:82-6.el6_1.30:82-6.el6_1.3
Red Hat:enterprise_linux:6::serverecryptfs-utils-develbefore 0:82-6.el6_1.30:82-6.el6_1.3
Red Hat:enterprise_linux:6::serverecryptfs-utils-pythonbefore 0:82-6.el6_1.30:82-6.el6_1.3

Same product

ecryptfs: all records

Other highest-scoring records for the same primary product.

  • CVE-2016-1572mount.ecryptfs_private.c in eCryptfs-utils does not validate mount destination filesystem types, which allows local users to gain privileges
    33Monitor
  • CVE-2012-3409ecryptfs-utils: suid helper does not restrict mounting filesystems with nosuid,nodev which creates a possible privilege escalation
    31Monitor
  • CVE-2014-9687eCryptfs 104 and earlier uses a default salt to encrypt the mount passphrase, which makes it easier for attackers to obtain user passwords v
    21Monitor
  • CVE-2011-1836utils/ecryptfs-recover-private in ecryptfs-utils before 90 does not establish a subdirectory with safe permissions, which might allow local
    18Monitor
  • CVE-2011-1835The encrypted private-directory setup process in utils/ecryptfs-setup-private in ecryptfs-utils before 90 does not properly ensure that the
    17Monitor
  • CVE-2011-1837The lock-counter implementation in utils/mount.ecryptfs_private.c in ecryptfs-utils before 90 allows local users to overwrite arbitrary file
    14Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:ecryptfs-utils92-1 · Debian:12Package registry (OSV)
opensuse:ecryptfs-utils108-2.5 · openSUSE:TumbleweedPackage registry (OSV)
red hat:ecryptfs-utils0:75-5.el5_7.2 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:ecryptfs-utils-debuginfo0:75-5.el5_7.2 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:ecryptfs-utils-devel0:75-5.el5_7.2 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:ecryptfs-utils-gui0:75-5.el5_7.2 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:ecryptfs-utils-python0:82-6.el6_1.3 · Red Hat:enterprise_linux:6::serverPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
P · data can be read
Integrity
P · data or configuration can be modified
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
P
Integrity impact
P
Availability impact
P

Weakness class (CWE)

CWE-264 · Permissions, Privileges, and Access Controls

CVSS vector

AV:L/AC:L/Au:N/C:P/I:P/A:P

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records