ecryptfs-utils mount.ecryptfs_private.c /proc/$pid access control

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in ecryptfs-utils. Affected by this issue is some unknown functionality of the file mount.ecryptfs_private.c. Such manipulation of the argument /proc/$pid leads to access control. This vulnerability is uniquely identified as CVE-2016-1572. Local access is required to approach this attack. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in ecryptfs-utils (affected version not known). Affected by this issue is some unknown functionality of the file mount.ecryptfs_private.c. The manipulation of the argument /proc/$pid with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:

mount.ecryptfs_private.c in eCryptfs-utils does not validate mount destination filesystem types, which allows local users to gain privileges by mounting over a nonstandard filesystem, as demonstrated by /proc/$pid.

The weakness was disclosed 01/22/2016 (Website). The advisory is available at ubuntu.com. This vulnerability is handled as CVE-2016-1572 since 01/11/2016. Local access is required to approach this attack. A simple authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 88023 (Debian DLA-397-1 : ecryptfs-utils security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168433 (SUSE Enterprise Linux Security update for ecryptfs-utils (SUSE-SU-2016:0290-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (88023), SecurityFocus (BID 81299†) and Vulnerability Center (SBV-56329†). The entry VDB-75382 is pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.4
VulDB Meta Temp Score: 8.2

VulDB Base Score: 8.4
VulDB Temp Score: 8.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.4
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 88023
Nessus Name: Debian DLA-397-1 : ecryptfs-utils security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703450
OpenVAS Name: Debian Security Advisory DSA 3450-1 (ecryptfs-utils - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/11/2016 🔍
01/19/2016 +8 days 🔍
01/19/2016 +0 days 🔍
01/20/2016 +1 days 🔍
01/20/2016 +0 days 🔍
01/22/2016 +1 days 🔍
01/22/2016 +0 days 🔍
01/25/2016 +3 days 🔍
02/01/2016 +7 days 🔍
07/06/2022 +2346 days 🔍

Sourcesinfo

Advisory: USN-2876-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-1572 (🔍)
GCVE (CVE): GCVE-0-2016-1572
GCVE (VulDB): GCVE-100-80642
SecurityFocus: 81299 - eCryptfs CVE-2016-1572 Local Privilege Escalation Vulnerability
SecurityTracker: 1034791
Vulnerability Center: 56329 - eCryptfs-utils Local Privilege Escalation via Mounting Over Nonstandard Filesystem, Medium

See also: 🔍

Entryinfo

Created: 01/25/2016 10:52
Updated: 07/06/2022 08:27
Changes: 01/25/2016 10:52 (61), 07/23/2018 07:38 (20), 07/06/2022 08:27 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!