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Vulnerability record · CVE-2016-0778 · published 14 January 2016

CVE-2016-0778: Oracle linux memory buffer overflow vulnerability

Oracle · Linux

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.

8.1 CVSS 3.1 High EPSS 21% · top 2.5% CWE-119 · Memory buffer overflow
8.1CVSS 3.1 base score, v2 4.6
21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
6Affected product versions listed by NVD
62References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

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

Affected products

6 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10734 Third Party Advisory
http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html Mailing ListRelease NotesThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176516.html Mailing ListThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176349.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00006.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00007.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00008.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00009.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00013.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00014.html Mailing ListThird Party Advisory
http://packetstormsecurity.com/files/135273/Qualys-Security-Advisory-OpenSSH-Overflow-Leak.html Third Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2016/Jan/44 Mailing ListThird Party Advisory
http://www.debian.org/security/2016/dsa-3446 Third Party Advisory
http://www.openssh.com/txt/release-7.1p2 PatchRelease NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2016/01/14/7 ExploitMailing ListTechnical DescriptionThird Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html Third Party Advisory
http://www.securityfocus.com/archive/1/537295/100/0/threaded Third Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/80698 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1034671 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-2869-1 Third Party Advisory
https://blogs.sophos.com/2016/02/17/utm-up2date-9-354-released/ Release NotesVendor Advisory
https://blogs.sophos.com/2016/02/29/utm-up2date-9-319-released/ Release NotesVendor Advisory
https://bto.bluecoat.com/security-advisory/sa109 Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05247375 Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05356388 Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05385680 Third Party Advisory
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722 Third Party Advisory
https://security.gentoo.org/glsa/201601-01 Third Party Advisory
https://support.apple.com/HT206167 Vendor Advisory
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10734 Third Party Advisory
http://lists.apple.com/archives/security-announce/2016/Mar/msg00004.html Mailing ListRelease NotesThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/176516.html Mailing ListThird Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176349.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00006.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00007.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00008.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00009.html Mailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-01/msg00013.html Mailing ListThird Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-0778), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.