CVE-2016-3115Openssh Vulnerability
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.
Published Mar 22, 2016 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2016-3115, UBUNTU-CVE-2016-3115
Key Facts
Routine patching- CVE-2016-3115 is a medium-severity vulnerability (CVSS 6.4 v3.1) affecting Openssh (Openbsd), Vm Server (Oracle), rootio-openssh and 14 more products.
- It is not listed in any known-exploited vulnerabilities catalog. A public exploit is reported by tracking sources, but no code link is listed yet.
- EPSS estimates a 36% probability of exploitation in the next 30 days.
- Fixed versions are available, including Openssh 7.2, Openssh 0:5.3p1-114.el6_7, Openssh 0:6.6.1p1-25.el7_2.
- Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.
Scores
CVSS v3.1
6.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
EPSS (30-day exploit likelihood)
36%
Higher than 98.4% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
38/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
1
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
Description
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.
Affected Products
129 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| OpensshOpenbsd | See advisory | 7.2 |
| Vm ServerOracle | 3.2 | n/a |
| rootio-opensshrootio | See advisory | 1:7.2p2-1 |
| openssh-clientsamazon | See advisory | 6.6.1p1-23.60.amzn1 |
| openssh-keycatamazon | See advisory | 6.6.1p1-23.60.amzn1 |
Patched Releases
Openssh
7.2, 0:5.3p1-114.el6_7, 0:6.6.1p1-25.el7_2, 1:6.6p1-2ubuntu2.7, 1:6.7p1-5+deb8u6, 1:7.2p2-1, 4.3p2-82.0.2.el5, 5.3p1-114.el6_7, 5.3p1-124.el6_10+sp999, 6.2p2-0.33.2, 6.6.1p1-23.60.amzn1, 6.6.1p1-25.el7_2, 6.6p1-11.1, 6.6p1-21.1, 6.6p1-42.1
openssh-askpass
4.3p2-82.0.2.el5, 5.3p1-114.el6_7, 6.2p2-0.33.2, 6.6.1p1-25.el7_2
openssh-askpass-gnome
6.2p2-0.33.5, 6.6p1-11.1, 6.6p1-21.3, 6.6p1-42.1
openssh-cavs
6.6p1-11.1
openssh-clients
4.3p2-82.0.2.el5, 5.3p1-114.el6_7, 6.6.1p1-23.60.amzn1, 6.6.1p1-25.el7_2
openssh-fips
6.6p1-11.1, 6.6p1-21.1, 6.6p1-42.1
openssh-helpers
6.6p1-11.1, 6.6p1-21.1, 6.6p1-42.1
openssh-keycat
6.6.1p1-23.60.amzn1, 6.6.1p1-25.el7_2
openssh-ldap
5.3p1-114.el6_7, 6.6.1p1-23.60.amzn1, 6.6.1p1-25.el7_2
openssh-openssl1
6.6p1-15.1
openssh-openssl1-helpers
6.6p1-15.1
openssh-server
4.3p2-82.0.2.el5, 5.3p1-114.el6_7, 6.6.1p1-23.60.amzn1, 6.6.1p1-25.el7_2
openssh-server-sysvinit
6.6.1p1-25.el7_2
pam_ssh_agent_auth
0.9.3-114.el6_7, 0.9.3-9.23.60.amzn1, 0.9.3-9.25.el7_2
rootio-openssh
1:7.2p2-1
seal-openssh
5.3p1-124.el6_10+sp999
Timeline
Publicly disclosed
Mar 22, 2016
Last updated
Aug 4, 2026
Weakness Type
- CWE-20 Improper Input Validation
- CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
References
- advisorysecurity-tracker.debian.org · CVE-2016-3115
- advisoryubuntu.com · CVE-2016-3115
- advisorycve.org · CVERecord
- advisoryRHSA-2016:0465
- advisoryRHSA-2016:0466
FAQ
Common Questions.
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.
Affected: Openssh (Openbsd); Vm Server (Oracle) versions 3.2; rootio-openssh, among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
A public exploit is reported by tracking sources, but no code link is listed yet.
Fixed versions are available, including Openssh 7.2, Openssh 0:5.3p1-114.el6_7, Openssh 0:6.6.1p1-25.el7_2.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.
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