Heap overflow in QNAP QTS/QuTS/QuTScloud OS before 5.1.2.2533
CVE-2023-41273 Published on February 2, 2024
QTS, QuTS hero, QuTScloud
A heap-based buffer overflow vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated administrators to execute code via a network.
We have already fixed the vulnerability in the following versions:
QTS 5.1.2.2533 build 20230926 and later
QuTS hero h5.1.2.2534 build 20230927 and later
QuTScloud c5.1.5.2651 and later
Vulnerability Analysis
CVE-2023-41273 can be exploited with network access, and requires 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, with no impact on integrity and availability.
Weakness Types
Heap-based Buffer Overflow
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
What is a Classic Buffer Overflow Vulnerability?
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold, or when a program attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the "classic" case in which the program copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.
CVE-2023-41273 has been classified to as a Classic Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2023-41273
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Affected Versions
QNAP Systems Inc. QTS:- Version 5.1.x and below 5.1.2.2533 build 20230926 is affected.
- Version h5.1.x and below h5.1.2.2534 build 20230927 is affected.
- Version c5.x.x and below c5.1.5.2651 is affected.
Exploit Probability
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.