Vulnerability in libssh2 - security update
Summary
DSA-3182-1: libssh2 - security update. Affects libssh2 versions < 1.4.2-1.1+deb7u1. Fixed in 1.4.2-1.1+deb7u1. How to fix ↓
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Background
libssh2 is a SSH2 client-side library used for establishing secure connections to remote servers. It provides functionality for negotiating SSH sessions and handling encryption. The library is widely used in various applications that require secure communication with remote servers.
Vulnerability Detail
A vulnerability was discovered in libssh2 that allowed a malicious attacker to exploit the SSH_MSG_KEXINIT packet during the negotiation of a new SSH session. The library did not perform sufficient range checks on the received packet, which could lead to a denial of service (crash) or unintended memory access. An attacker could potentially perform a man-in-the-middle attack and manipulate the server response to trigger this vulnerability.
How To Fix
Minimum fixed version
1.4.2-1.1+deb7u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade libssh2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability. It is essential to apply the security update to ensure the integrity and security of the libssh2 library.
Conclusion
The vulnerability in libssh2 could allow an attacker to crash a client or gain unintended access to memory areas. It is recommended to upgrade the libssh2 package to the latest version to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for libssh2 →
FAQ
libssh2 is a SSH2 client-side library used for secure communication with remote servers.
This vulnerability could allow an attacker to crash a client using the libssh2 library or gain unintended access to memory areas.
To fix this vulnerability, you should upgrade the libssh2 package to version 1.4.2-1.1+deb7u1 or later.
No, there is no known workaround for this vulnerability. It is crucial to apply the security update.
You can find more information about this vulnerability in the DSA-3182-1 advisory on the Debian Security website.
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