#VU48894 Uncontrolled Recursion in cURL
Vulnerability identifier: #VU48894
Vulnerability risk: Low
CVSSv3.1:
CVE-ID:
CWE-ID:
CWE-674
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
cURL
Client/Desktop applications /
Other client software
Vendor: curl.haxx.se
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due tu uncontrolled recursion when processing FTP responses within the wildcard matching functionality, which allows a callback (set
with <a href="https://curl.se/libcurl/c/CURLOPT_CHUNK_BGN_FUNCTION.html">CURLOPT_CHUNK_BGN_FUNCTION</a>) to return information back to libcurl on
how to handle a specific entry in a directory when libcurl iterates over a
list of all available entries. A remote attacker who controls the malicious FTP server can trick the victim to connect to it and crash the application, which is using the affected libcurl version.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
cURL: 7.21.0 - 7.73.0
CPE
External links
http://curl.haxx.se/docs/CVE-2020-8285.html
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
