CVE-2013-0176

Description

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.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 1.14% Top 25%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory ubuntu.com Vendor Advisory secunia.com Vendor Advisory libssh.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098094.html vendor advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/81595 vdb entry
http://secunia.com/advisories/51982 third party advisory vendor advisory
http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098065.html vendor advisory
http://www.ubuntu.com/usn/USN-1707-1 vendor advisory
http://www.libssh.org/2013/01/22/libssh-0-5-4-security-release/ patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2013-0176?
CVE-2013-0176 has been scored as a medium severity vulnerability.
How to fix CVE-2013-0176?
To fix CVE-2013-0176, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-0176 being actively exploited in the wild?
It is possible that CVE-2013-0176 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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