gnu glibc CVE-2020-1751 vulnerability in GNU and Other Products
Published on April 17, 2020

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An out-of-bounds write vulnerability was found in glibc before 2.31 when handling signal trampolines on PowerPC. Specifically, the backtrace function did not properly check the array bounds when storing the frame address, resulting in a denial of service or potential code execution. The highest threat from this vulnerability is to system availability.

Vendor Advisory Vendor Advisory NVD

Vulnerability Analysis

CVE-2020-1751 can be exploited with local system access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of 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:
HIGH
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2020-1751 has been classified to as a Memory Corruption vulnerability or weakness.


Products Associated with CVE-2020-1751

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2020-1751 are published in these products:

GNU Glibc
 
Red Hat Enterprise Linux (RHEL)
 
Canonical Ubuntu Linux
 

Affected Versions

Red Hat glibc Version 2.31 is affected by CVE-2020-1751

Exploit Probability

EPSS
0.14%
Percentile
33.60%

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.