Skip to content
Fencer Intel
medium 6.4

CVE-2016-3115 json

Multiple CRLF injection vulnerabilities in session.c in sshd in OpenSSH before 7.2p2 allow remote authenticated users to bypass intended sh…

published 2016-03-22 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-4168

cvss
6.4
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
35.5%
EPSS 35.5% chance of exploitation in 30 days, percentile 98%
public exploits
1
Exploit-DB

Summary

Multiple CRLF injection vulnerabilities in session.c in sshd in OpenSSH before 7.2p2 allow remote authenticated users to bypass intended shell-command restrictions via crafted X11 forwarding data, related to the (1) do_authenticated1 and (2) session_x11_req functions.

Patch / fix

  • openssh Debian 14, Debian 13, Debian 12 1:7.2p2-1

debian advisories DEBIAN-CVE-2016-3115

  • openssh Ubuntu 14.04 LTS 1:6.6p1-2ubuntu2.7

ubuntu advisories UBUNTU-CVE-2016-3115

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • openssh RHEL 6 5.3p1-114.el6_7
  • openssh-ldap RHEL 6 5.3p1-114.el6_7
  • openssh-server RHEL 6 5.3p1-114.el6_7
  • openssh-askpass RHEL 6 5.3p1-114.el6_7
  • openssh-clients RHEL 6 5.3p1-114.el6_7
  • pam_ssh_agent_auth RHEL 6 0.9.3-114.el6_7
  • openssh RHEL 7 6.6.1p1-25.el7_2
  • openssh-ldap RHEL 7 6.6.1p1-25.el7_2

red hat advisories RHSA-2016:0466RHSA-2016:0465

  • openssh-openssl1 SLES 11-SECURITY 6.6p1-15.1
  • openssh SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 +3 more 6.2p2-0.33.2
  • openssh-askpass-gnome SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 +3 more 6.2p2-0.33.5
  • openssh SLES for SAP 11 SP4, SLES 11 SP4 6.6p1-21.1
  • openssh-askpass-gnome SLES for SAP 11 SP4, SLES 11 SP4 6.6p1-21.3
  • openssh SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +3 more 6.6p1-42.1
  • openssh-askpass-gnome SLES for SAP 12 SP1, SLES for SAP 12, SLES 12 SP1 +3 more 6.6p1-42.1

suse advisories SUSE-SU-2016:2555-1SUSE-SU-2016:2388-1SUSE-SU-2016:1528-1SUSE-SU-2016:1386-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-3115 updated cvss 4.9

openssh: missing sanitisation of input for X11 forwarding

  • Red Hat Enterprise Linux 5 openssh
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) openssh 6.6.1p1-25.el7_2, openssh-keycat 6.6.1p1-25.el7_2, openssh-server 6.6.1p1-25.el7_2, openssh-askpass 6.6.1p1-25.el7_2, openssh-clients 6.6.1p1-25.el7_2 Red Hat Enterprise Linux Client Optional (v. 7) openssh-ldap 6.6.1p1-25.el7_2, pam_ssh_agent_auth 0.9.3-9.25.el7_2, openssh-server-sysvinit 6.6.1p1-25.el7_2 Red Hat Enterprise Linux ComputeNode (v. 7) openssh 6.6.1p1-25.el7_2, openssh-keycat 6.6.1p1-25.el7_2, openssh-server 6.6.1p1-25.el7_2, openssh-clients 6.6.1p1-25.el7_2 Red Hat Enterprise Linux ComputeNode Optional (v. 7) openssh-ldap 6.6.1p1-25.el7_2, openssh-askpass 6.6.1p1-25.el7_2, pam_ssh_agent_auth 0.9.3-9.25.el7_2, openssh-server-sysvinit 6.6.1p1-25.el7_2
    fixed: vendor fix RHSA-2016:0465
  • Red Hat Enterprise Linux Desktop (v. 6) openssh 5.3p1-114.el6_7, openssh-server 5.3p1-114.el6_7, openssh-askpass 5.3p1-114.el6_7, openssh-clients 5.3p1-114.el6_7 Red Hat Enterprise Linux Desktop Optional (v. 6) openssh-ldap 5.3p1-114.el6_7, pam_ssh_agent_auth 0.9.3-114.el6_7 Red Hat Enterprise Linux HPC Node (v. 6) openssh 5.3p1-114.el6_7, openssh-server 5.3p1-114.el6_7, openssh-clients 5.3p1-114.el6_7 Red Hat Enterprise Linux HPC Node Optional (v. 6) openssh-ldap 5.3p1-114.el6_7, openssh-askpass 5.3p1-114.el6_7, pam_ssh_agent_auth 0.9.3-114.el6_7 Red Hat Enterprise Linux Server (v. 6) openssh 5.3p1-114.el6_7, openssh-server 5.3p1-114.el6_7, openssh-askpass 5.3p1-114.el6_7, openssh-clients 5.3p1-114.el6_7
    fixed: vendor fix RHSA-2016:0466
  • Red Hat Enterprise Linux Server (v. 7) openssh 6.6.1p1-25.el7_2, openssh-keycat 6.6.1p1-25.el7_2, openssh-server 6.6.1p1-25.el7_2, openssh-askpass 6.6.1p1-25.el7_2, openssh-clients 6.6.1p1-25.el7_2
    fixed: vendor fix RHSA-2016:0465
  • Red Hat Enterprise Linux Server Optional (v. 6) openssh-ldap 5.3p1-114.el6_7, pam_ssh_agent_auth 0.9.3-114.el6_7
    fixed: vendor fix RHSA-2016:0466
  • Red Hat Enterprise Linux Server Optional (v. 7) openssh-ldap 6.6.1p1-25.el7_2, pam_ssh_agent_auth 0.9.3-9.25.el7_2, openssh-server-sysvinit 6.6.1p1-25.el7_2
    fixed: vendor fix RHSA-2016:0465
  • Red Hat Enterprise Linux Workstation (v. 6) openssh 5.3p1-114.el6_7, openssh-server 5.3p1-114.el6_7, openssh-askpass 5.3p1-114.el6_7, openssh-clients 5.3p1-114.el6_7
    fixed: vendor fix RHSA-2016:0466
  • Red Hat Enterprise Linux Workstation (v. 7) openssh 6.6.1p1-25.el7_2, openssh-keycat 6.6.1p1-25.el7_2, openssh-server 6.6.1p1-25.el7_2, openssh-askpass 6.6.1p1-25.el7_2, openssh-clients 6.6.1p1-25.el7_2
    fixed: vendor fix RHSA-2016:0465
show 2 more
  • Red Hat Enterprise Linux Workstation Optional (v. 6) openssh-ldap 5.3p1-114.el6_7, pam_ssh_agent_auth 0.9.3-114.el6_7
    fixed: vendor fix RHSA-2016:0466
  • Red Hat Enterprise Linux Workstation Optional (v. 7) openssh-ldap 6.6.1p1-25.el7_2, pam_ssh_agent_auth 0.9.3-9.25.el7_2, openssh-server-sysvinit 6.6.1p1-25.el7_2
    fixed: vendor fix RHSA-2016:0465

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. First public exploit (EDB-39569)
  2. Published

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
5 mo ago

Exploit prediction

35.53% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-39569 OpenSSH 7.2p1 - (Authenticated) xauth Command Injection remote, 2016-03-16

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CNA 3.1 6.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
NVD 3.0 6.4 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
NVD 2.0 5.5 AV:N/AC:L/Au:S/C:P/I:P/A:N

Classification

Weakness
  • CWE-93 Improper Neutralization of CRLF Sequences

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.