#VU82286 Input validation error in libssh2 - CVE-2015-1782

Vulnerability identifier: #VU82286

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2015-1782

CWE-ID: CWE-20

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 insufficient validation of user-supplied input. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libssh2: before 1.5.0

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External links
https://www.debian.org/security/2015/dsa-3182
https://www.libssh2.org/adv_20150311.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-March/151943.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-March/152362.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-March/153933.html
https://www.mandriva.com/security/advisories?name=MDVSA-2015:148
https://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
https://www.securityfocus.com/bid/73061

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Q & A

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.