The resend_bytes function in roaming_common.c in the client in OpenSSH 5.x, 6.x, and 7.x before 7.1p2 allows remote servers to obtain sensit
The resend_bytes function in roaming_common.c in the client in OpenSSH 5.x, 6.x, and 7.x before 7.1p2 allows remote servers to obtain sensitive information from process memory by requesting transmission of an entire buffer, as demonstrated by reading a private key.
- Published
- Jan 14, 2016
- Updated
- Jun 16, 2026
- EPSS
- 63.5% · 99th percentile
- CWE
- CWE-200
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Report tools
Action score
45
Plan
Add it to your regular patch cycle.
- CVSS
- 26 / 40 · 6.5 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 19 / 30 · 63.5%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
Vulnrichment: CISA's decision-tree inputs.
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| sophos | unified threat management software | cpe:2.3:a:sophos:unified_threat_management_software |
| sophos | unified threat management | cpe:2.3:h:sophos:unified_threat_management |
| oracle | linux | cpe:2.3:o:oracle:linux |
| oracle | solaris | cpe:2.3:o:oracle:solaris |
| openbsd | openssh | cpe:2.3:a:openbsd:openssh |
| hp | remote device access virtual customer access system | cpe:2.3:a:hp:remote_device_access_virtual_customer_access_system |
| apple | mac os x | cpe:2.3:o:apple:mac_os_x |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- apple mac os xup to 10.11.3 inclusive
- hp remote device access virtual customer access systemup to 15.07 inclusive
- openbsd openssh5.0
- openbsd openssh5.1
- openbsd openssh5.2
- openbsd openssh5.3
- openbsd openssh5.4
- openbsd openssh5.5
- openbsd openssh5.6
- openbsd openssh5.7
- openbsd openssh5.8
- openbsd openssh5.9
- openbsd openssh6.0
- openbsd openssh6.1
- openbsd openssh6.2
- openbsd openssh6.3
- openbsd openssh6.4
- openbsd openssh6.5
- openbsd openssh6.6
- openbsd openssh6.7
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| Debian:12 | openssh | before 1:7.1p2-1 | 1:7.1p2-1 |
| Debian:6.0 | openssh | before 1:5.5p1-6+squeeze8 | 1:5.5p1-6+squeeze8 |
| Debian:7 | openssh | before 1:6.0p1-4+deb7u3 | 1:6.0p1-4+deb7u3 |
| Debian:8 | openssh | before 1:6.7p1-5+deb8u1 | 1:6.7p1-5+deb8u1 |
| openSUSE:Tumbleweed | openssh | before 7.2p2-3.1 | 7.2p2-3.1 |
| Red Hat:enterprise_linux:7::client | openssh | before 0:6.6.1p1-23.el7_2 | 0:6.6.1p1-23.el7_2 |
| Red Hat:enterprise_linux:7::client | openssh-askpass | before 0:6.6.1p1-23.el7_2 | 0:6.6.1p1-23.el7_2 |
| Red Hat:enterprise_linux:7::client | openssh-clients | before 0:6.6.1p1-23.el7_2 | 0:6.6.1p1-23.el7_2 |
| Red Hat:enterprise_linux:7::client | openssh-debuginfo | before 0:6.6.1p1-23.el7_2 | 0:6.6.1p1-23.el7_2 |
| Red Hat:enterprise_linux:7::client | openssh-keycat | before 0:6.6.1p1-23.el7_2 | 0:6.6.1p1-23.el7_2 |
| Red Hat:enterprise_linux:7::client | openssh-ldap | before 0:6.6.1p1-23.el7_2 | 0:6.6.1p1-23.el7_2 |
| Red Hat:enterprise_linux:7::client | openssh-server | before 0:6.6.1p1-23.el7_2 | 0:6.6.1p1-23.el7_2 |
| Red Hat:enterprise_linux:7::client | openssh-server-sysvinit | before 0:6.6.1p1-23.el7_2 | 0:6.6.1p1-23.el7_2 |
| Red Hat:enterprise_linux:7::client | pam_ssh_agent_auth | before 0:0.9.3-9.23.el7_2 | 0:0.9.3-9.23.el7_2 |
| SUSE:Linux Enterprise Desktop 11 SP3 | openssh | before 6.2p2-0.24.1 | 6.2p2-0.24.1 |
| SUSE:Linux Enterprise Desktop 11 SP3 | openssh-askpass-gnome | before 6.2p2-0.24.3 | 6.2p2-0.24.3 |
| SUSE:Linux Enterprise Desktop 11 SP4 | openssh | before 6.6p1-16.1 | 6.6p1-16.1 |
| SUSE:Linux Enterprise Desktop 11 SP4 | openssh-askpass-gnome | before 6.6p1-16.4 | 6.6p1-16.4 |
| SUSE:Linux Enterprise Desktop 12 | openssh | before 6.6p1-33.1 | 6.6p1-33.1 |
| SUSE:Linux Enterprise Desktop 12 | openssh-askpass-gnome | before 6.6p1-33.1 | 6.6p1-33.1 |
| SUSE:Linux Enterprise Server 11-SECURITY | openssh-openssl1 | before 6.6p1-10.1 | 6.6p1-10.1 |
Same product
sophos: all recordsOther highest-scoring records for the same primary product.
- CVE-2013-5932Unspecified vulnerability in WebAdmin in Sophos UTM (aka Astaro Security Gateway) before 9.105 has unknown impact and attack vectors.42Plan
- CVE-2014-2537Memory leak in the TCP stack in the kernel in Sophos UTM before 9.109 allows remote attackers to cause a denial of service (memory consumpti32Monitor
- CVE-2016-2046Cross-site scripting (XSS) vulnerability in the UserPortal page in SOPHOS UTM before 9.353 allows remote attackers to inject arbitrary web s25Monitor
- CVE-2016-7442The Frontend component in Sophos UTM with firmware 9.405-5 and earlier allows local administrators to obtain sensitive password information 17Monitor
- CVE-2016-7397The Frontend component in Sophos UTM with firmware 9.405-5 and earlier allows local administrators to obtain sensitive password information 17Monitor
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| Debian:openssh | 1:7.1p2-1 · Debian:12 | Package registry (OSV) |
| openSUSE:openssh | 7.2p2-3.1 · openSUSE:Tumbleweed | Package registry (OSV) |
| Red Hat:openssh | 0:6.6.1p1-23.el7_2 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| Red Hat:openssh-askpass | 0:6.6.1p1-23.el7_2 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| Red Hat:openssh-clients | 0:6.6.1p1-23.el7_2 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| Red Hat:openssh-debuginfo | 0:6.6.1p1-23.el7_2 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| Red Hat:openssh-keycat | 0:6.6.1p1-23.el7_2 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| Red Hat:openssh-ldap | 0:6.6.1p1-23.el7_2 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| Red Hat:openssh-server | 0:6.6.1p1-23.el7_2 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| Red Hat:openssh-server-sysvinit | 0:6.6.1p1-23.el7_2 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| Red Hat:pam_ssh_agent_auth | 0:0.9.3-9.23.el7_2 · Red Hat:enterprise_linux:7::client | Package registry (OSV) |
| SUSE:openssh | 6.6p1-33.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| SUSE:openssh-askpass-gnome | 6.6p1-33.1 · SUSE:Linux Enterprise Desktop 12 | Package registry (OSV) |
| SUSE:openssh-openssl1 | 6.6p1-10.1 · SUSE:Linux Enterprise Server 11-SECURITY | Package registry (OSV) |
Exploit status
Proof of concept available
A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.
Evidence
- Proof-of-concept repository on GitHub ×1
Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.
| Source | Kind | Date |
|---|---|---|
| Proof-of-concept repository on GitHub | stars:0 | 2025-11-11 |
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
- Published
- First PoC+3588 d
- TodaySep 29, 2026+3911 d
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
The product’s vendor appears in a public program. Matched by name; verify the scope text in the program.
Technical details
Attack conditions
- Anyone who can reach it over the internet can trigger it.
- A low-privileged account is enough.
- No user action is required.
- No special conditions are required; it is repeatable.
If successful
- Confidentiality
- high · data can be read
- Integrity
- none
- Availability
- none
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- None
- Availability impact
- None
Weakness class (CWE)
CWE-200 · Exposure of Sensitive Information to an Unauthorized ActorCVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
nvd-secondary
Root cause
The extension requests broader permissions than its function needs and sends the data it collects out for purposes beyond its stated function.
The bug in code
The whole CWE-200 classA representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.
Vulnerable
{ "permissions": ["tabs", "<all_urls>"], "background": { "service_worker": "analytics.js" }}Fixed
{ "permissions": ["activeTab"], "host_permissions": ["https://yildiz.example/*"]}Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
Attack patterns (CAPEC)
- ExcavationCAPEC-116likelihood: High · Medium
- Subverting Environment Variable ValuesCAPEC-13likelihood: High · Very High
- FootprintingCAPEC-169likelihood: High · Very Low
- Exploiting Trust in ClientCAPEC-22likelihood: High · High
- FingerprintingCAPEC-224likelihood: High · Very Low
- ICMP Echo Request PingCAPEC-285likelihood: Medium · Low
- TCP SYN ScanCAPEC-287Low
- Enumerate Mail Exchange (MX) RecordsCAPEC-290Low
ATT&CK techniques
- System Service DiscoveryT1007
- System Network Configuration DiscoveryT1016
- Remote System DiscoveryT1018
- System Owner/User DiscoveryT1033
- Masquerading: Match Legitimate Name or LocationT1036.005
- Network Service ScanningT1046
- System Network Connections DiscoveryT1049
- Process DiscoveryT1057
- Permission Groups DiscoveryT1069
- System Information DiscoveryT1082
- File and Directory DiscoveryT1083
- Account DiscoveryT1087
- Multi-Factor Authentication InterceptionT1111
- Peripheral Device DiscoveryT1120
- System Time DiscoveryT1124
- Access Token Manipulation:Token Impersonation/TheftT1134.001
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
- Fix✗ → ✓
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References
- kb.juniper.net/InfoCenter/index?page=content&id=JSA10734
- lists.apple.com/archives/security-announce/2016/Mar/msg00004.html
- lists.fedoraproject.org/pipermail/package-announce/2016-February/176516.html
- lists.fedoraproject.org/pipermail/package-announce/2016-January/175592.html
- lists.fedoraproject.org/pipermail/package-announce/2016-January/175676.html
- lists.fedoraproject.org/pipermail/package-announce/2016-January/176349.html
- lists.opensuse.org/opensuse-security-announce/2016-01/msg00006.html
- lists.opensuse.org/opensuse-security-announce/2016-01/msg00007.html
- lists.opensuse.org/opensuse-security-announce/2016-01/msg00008.html
- lists.opensuse.org/opensuse-security-announce/2016-01/msg00009.html
- lists.opensuse.org/opensuse-security-announce/2016-01/msg00013.html
- lists.opensuse.org/opensuse-security-announce/2016-01/msg00014.html
- packetstormsecurity.com/files/135273/Qualys-Security-Advisory-OpenSSH-Overflow-Leak.html
- seclists.org/fulldisclosure/2016/Jan/44
- www.debian.org/security/2016/dsa-3446
- www.openssh.com/txt/release-7.1p2
- www.openwall.com/lists/oss-security/2016/01/14/7
- www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
- www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
- www.securityfocus.com/archive/1/537295/100/0/threaded
Vendor advisories and official records. Exploit/PoC links are deliberately left out.