Simple FTP Client and Server FTP/server_ftp.c malloc size_packet memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Simple FTP Client and Server. It has been rated as critical. This affects the function malloc of the file FTP/server_ftp.c. The manipulation of the argument size_packet leads to memory corruption. This vulnerability is referenced as CVE-2023-22551. Remote exploitation of the attack is possible. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in Simple FTP Client and Server (version unknown) and classified as critical. This issue affects the function malloc of the file FTP/server_ftp.c. The manipulation of the argument size_packet with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. The summary by CVE is:

The FTP (aka "Implementation of a simple FTP client and server") project through 96c1a35 allows remote attackers to cause a denial of service (memory consumption) by engaging in client activity, such as establishing and then terminating a connection. This occurs because malloc is used but free is not.

The weakness was published 01/02/2023. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-22551 since 01/01/2023. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-26691). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/01/2023 🔍
01/02/2023 +1 days 🔍
01/02/2023 +0 days 🔍
10/01/2025 +1003 days 🔍

Sourcesinfo

Advisory: github.com
Status: Not defined

CVE: CVE-2023-22551 (🔍)
GCVE (CVE): GCVE-0-2023-22551
GCVE (VulDB): GCVE-100-217175
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/02/2023 08:24
Updated: 10/01/2025 15:51
Changes: 01/02/2023 08:24 (41), 01/26/2023 19:26 (11), 04/07/2025 21:52 (16), 10/01/2025 15:51 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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