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CVE-2013-0176

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Date: February 5, 2013

The publickey_from_privatekey function in libssh before 0.5.4, when no algorithm is matched during negotiations, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a "Client: Diffie-Hellman Key Exchange Init" packet.

Language: C

Severity Score

Related Resources (8)

http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098065.html
http://www.ubuntu.com/usn/USN-1707-1
http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098094.html
http://secunia.com/advisories/51982
https://exchange.xforce.ibmcloud.com/vulnerabilities/81595
https://nvd.nist.gov/vuln/detail/CVE-2013-0176
http://www.libssh.org/2013/01/22/libssh-0-5-4-security-release/
https://www.mend.io/vulnerability-database/CVE-2013-0176

Severity Score

Weakness Type (CWE)

Resource Management Errors

CWE-399

Top Fix

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Upgrade to version libssh-0.5.4

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): LOW

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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