Is CVE-2016-0778 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 20%.

What products does CVE-2016-0778 affect?

Tracked products affected include OpenSSH, Solaris. Check the version you run to see whether it is affected.

How do I fix CVE-2016-0778?

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

CVE-2016-0778

Q: What is CVE-2016-0778?

CVE-2016-0778 is a high-severity software vulnerability (Memory corruption) with a CVSS score of 8.1. The (1) roaming_read and (2) roaming_write functions in roaming_common.c in the client in OpenSSH 5.x, 6.x, and 7.x before 7.1p2, when certain proxy and forward options are enabled, do not properly maintain connection file descriptors, whic

HIGH severity · CVSS 8.1 · Memory corruption

8.1CVSS HIGH

Summary

The (1) roaming_read and (2) roaming_write functions in roaming_common.c in the client in OpenSSH 5.x, 6.x, and 7.x before 7.1p2, when certain proxy and forward options are enabled, do not properly maintain connection file descriptors, which allows remote servers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact by requesting many forwardings.

Impact & exploitability

Attack vectorNetwork

Attack complexityHigh

Privileges requiredNone

User interactionNone

Confidentiality impactHigh

Integrity impactHigh

Availability impactHigh

Exploit probability (EPSS)20%

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products we track (2)

OpenSSH Solaris

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10734Advisory
http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.htmlAdvisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176516.htmlAdvisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176349.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00006.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00007.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00008.htmlAdvisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00009.htmlAdvisory