gnu glibc CVE-2020-27618 vulnerability in GNU and Other Products
Published on February 26, 2021

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The iconv function in the GNU C Library (aka glibc or libc6) 2.32 and earlier, when processing invalid multi-byte input sequences in IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 encodings, fails to advance the input state, which could lead to an infinite loop in applications, resulting in a denial of service, a different vulnerability from CVE-2016-10228.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2020-27618 is exploitable with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

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

Weakness Type

What is an Infinite Loop Vulnerability?

The program contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. If the loop can be influenced by an attacker, this weakness could allow attackers to consume excessive resources such as CPU or memory.

CVE-2020-27618 has been classified to as an Infinite Loop vulnerability or weakness.


Products Associated with CVE-2020-27618

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2020-27618 are published in these products:

GNU Glibc
 
Canonical Ubuntu Linux
 
NetApp Ontap Select Deploy Administration Utility
 
Oracle Communications Cloud Native Core Service Communication Proxy
 
Debian Linux
 

Exploit Probability

EPSS
0.07%
Percentile
21.78%

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.