Open Source Vulnerability in curl - Out-of-Bounds Read
Summary
DLA-1121-1: curl - security update. Affects curl versions < 7.26.0-1+wheezy21. Fixed in 7.26.0-1+wheezy21. How to fix ↓
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Background
curl is a command-line tool and library used for transferring data over HTTP/FTP, among other protocols. It is widely used for various network-related tasks. However, a vulnerability has been discovered in curl that allows for an out-of-bounds read. This vulnerability can be exploited by a malicious FTP server to disrupt the interaction between curl-based clients and the server.
Vulnerability Detail
The vulnerability in curl arises from an out-of-bounds read issue. When interacting with a malicious FTP server, curl can read beyond the intended boundaries of a buffer, leading to potential memory corruption and denial of service. This can result in the inability of curl-based clients to communicate with the server. The vulnerability is tracked under CVE-2017-1000254.
How To Fix
Minimum fixed version
7.26.0-1+wheezy21
This is the first release that contains the fix.
sudo apt-get install --only-upgrade curlTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. However, users can mitigate the risk by avoiding interactions with untrusted or malicious FTP servers.
Conclusion
In conclusion, the curl package is vulnerable to an out-of-bounds read issue that can be exploited by a malicious FTP server. To mitigate the risk, it is recommended to upgrade the curl package to the fixed version. For further assistance and support in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for curl →
FAQ
curl is a command-line tool and library used for transferring data over various protocols, including HTTP and FTP.
An out-of-bounds read vulnerability occurs when a program reads data from a memory location beyond the boundaries of a buffer. This can lead to memory corruption and potential security issues.
A malicious FTP server can exploit this vulnerability by providing specially crafted responses that cause curl to read beyond the intended buffer boundaries, leading to denial of service.
The vulnerability can result in the inability of curl-based clients to interact with a malicious FTP server. This can disrupt normal operations and potentially impact the availability of services relying on curl.
To fix this vulnerability in Debian 7 Wheezy, you need to upgrade the curl package to version 7.26.0-1+wheezy21 or later. This can be done through the package manager or by manually installing the updated version.
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