Vulnerability identifier: #VU80523
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-787
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
libssh2
Client/Desktop applications /
Software for system administration
Vendor: libssh2.org
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to usage of an uninitialized value within the _libssh2_transport_read() function in transport.c. A remote attacker can pass specially crafted input to the application, trigger memory corruption and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
libssh2: 1.9.0
External links
http://github.com/libssh2/libssh2/pull/476
http://github.com/libssh2/libssh2/commit/0b44e558f311671f6e6d14c559bc1c9bda59b8df
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.