gnu glibc CVE-2021-35942 vulnerability in GNU and Other Products
Published on July 22, 2021

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The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (in posix/wordexp.c) when called with an untrusted, crafted pattern, potentially resulting in a denial of service or disclosure of information. This occurs because atoi was used but strtoul should have been used to ensure correct calculations.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2021-35942 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

Incorrect Type Conversion or Cast

The software does not correctly convert an object, resource, or structure from one type to a different type.


Products Associated with CVE-2021-35942

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-35942 are published in these products:

GNU Glibc
 
NetApp Active Iq Unified Manager
 
NetApp E Series Santricity Os Controller
 
NetApp Hci Management Node
 
NetApp Ontap Select Deploy Administration Utility
 
NetApp Solidfire
 
Canonical Ubuntu Linux
 
Debian Linux
 

Exploit Probability

EPSS
1.11%
Percentile
78.06%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.