Home/CVE/The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted mode is not used, lacks
CVE

CVE-2015-5352

The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted mode is not used, lacks

The x11_open_helper function in channels.c in ssh in OpenSSH before 6.9, when ForwardX11Trusted mode is not used, lacks a check of the refusal deadline for X connections, which makes it easier for remote attackers to bypass intended access restrictions via a connection outside of the permitted time window.

MEDIUM · CVSS 4.3 EPSS 0.0539
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  • EPSS percentile: top 10% of all CVEs by exploitation likelihood
Sigma rules2 YARA rules0
▤

Affected Products & Versions

1
openbsd openssh<= 6.8
◈

Sigma Hunt Rules

2
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
productmediumSuspicious OpenSSH Daemon Error
productmediumOpenSSH Server Listening On Socket
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v2 (legacy) · cve@mitre.org
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:M/Au:N/C:N/I:P/A:N
Published to NVD03 Aug 2015 · 01:59 AM
⚑

Vendor Advisories

8
siemens-csafSSA-412672
rhsaRHSA-2016:0741Moderate
suse-csafSUSE-SU-2015:1840-1
suse-csafSUSE-SU-2015:1695-1
suse-csafSUSE-SU-2015:1581-1
🔗

References & Sources

15
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00017.html
http://openwall.com/lists/oss-security/2015/07/01/10
http://rhn.redhat.com/errata/RHSA-2016-0741.html
http://www.openssh.com/txt/release-6.9Vendor Advisory
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
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