Skip to content
Noroxi
NVD / CVE Program· CNA redhat

CVE-2016-4455: The Subscription Manager package (aka subscription-manager) before 1.17.7-1 for Candlepin uses weak permissions (755) for…

LowCVSS 3.3 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 13/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.45% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: python-rhsm (Red Hat:enterprise_linux:6::client) 0:1.18.6-1.el6; python-rhsm-certificates (Red Hat:enterprise_linux:6::client) 0:1.18.6-1.el6; python-rhsm-debuginfo (Red Hat:enterprise_linux:6::client) 0:1.18.6-1.el6.

Low priority for now. Upgrade to python-rhsm (Red Hat:enterprise_linux:6::client) 0:1.18.6-1.el6; python-rhsm-certificates (Red Hat:enterprise_linux:6::client) 0:1.18.6-1.el6; python-rhsm-debuginfo (Red Hat:enterprise_linux:6::client) 0:1.18.6-1.el6 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

The Subscription Manager package (aka subscription-manager) before 1.17.7-1 for Candlepin uses weak permissions (755) for subscription-manager cache directories, which allows local users to obtain sensitive information by reading files in the directories.

Published
Apr 14, 2017
Updated
Jun 16, 2026
EPSS
0.4% · 39th percentile

Report tools

JSON

Action score

13

Monitor

Low priority for now.

CVSS
13 / 40 · 3.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2016-4455

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits every 10 minutes on paid plans, on the hour on the free plan.

Your free account also gets you

  • CVE alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools, at most 30 a day (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for redhat records
Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
redhatenterprise linux desktop
redhatenterprise linux hpc node
redhatenterprise linux server
redhatenterprise linux workstation
redhatsubscription-manager

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • redhat enterprise linux desktop6.0
  • redhat enterprise linux desktop7.0
  • redhat enterprise linux hpc node6.0
  • redhat enterprise linux hpc node7.0
  • redhat enterprise linux server6.0
  • redhat enterprise linux server7.0
  • redhat enterprise linux workstation6.0
  • redhat enterprise linux workstation7.0
  • redhat subscription-managerup to 1.17.6-1 inclusive

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Red Hat:enterprise_linux:6::clientpython-rhsmbefore 0:1.18.6-1.el60:1.18.6-1.el6
Red Hat:enterprise_linux:6::clientpython-rhsm-certificatesbefore 0:1.18.6-1.el60:1.18.6-1.el6
Red Hat:enterprise_linux:6::clientpython-rhsm-debuginfobefore 0:1.18.6-1.el60:1.18.6-1.el6
Red Hat:enterprise_linux:6::clientsubscription-managerbefore 0:1.18.10-1.el60:1.18.10-1.el6
Red Hat:enterprise_linux:6::clientsubscription-manager-debuginfobefore 0:1.18.10-1.el60:1.18.10-1.el6
Red Hat:enterprise_linux:6::clientsubscription-manager-firstbootbefore 0:1.18.10-1.el60:1.18.10-1.el6
Red Hat:enterprise_linux:6::clientsubscription-manager-guibefore 0:1.18.10-1.el60:1.18.10-1.el6
Red Hat:enterprise_linux:6::clientsubscription-manager-migrationbefore 0:1.18.10-1.el60:1.18.10-1.el6
Red Hat:enterprise_linux:6::clientsubscription-manager-migration-databefore 0:2.0.34-1.el60:2.0.34-1.el6
Red Hat:enterprise_linux:6::clientsubscription-manager-plugin-containerbefore 0:1.18.10-1.el60:1.18.10-1.el6
Red Hat:enterprise_linux:7::clientpython-rhsmbefore 0:1.17.9-1.el70:1.17.9-1.el7
Red Hat:enterprise_linux:7::clientpython-rhsm-certificatesbefore 0:1.17.9-1.el70:1.17.9-1.el7
Red Hat:enterprise_linux:7::clientpython-rhsm-debuginfobefore 0:1.17.9-1.el70:1.17.9-1.el7
Red Hat:enterprise_linux:7::clientsubscription-managerbefore 0:1.17.15-1.el70:1.17.15-1.el7
Red Hat:enterprise_linux:7::clientsubscription-manager-debuginfobefore 0:1.17.15-1.el70:1.17.15-1.el7
Red Hat:enterprise_linux:7::clientsubscription-manager-guibefore 0:1.17.15-1.el70:1.17.15-1.el7
Red Hat:enterprise_linux:7::clientsubscription-manager-initial-setup-addonbefore 0:1.17.15-1.el70:1.17.15-1.el7
Red Hat:enterprise_linux:7::clientsubscription-manager-migrationbefore 0:1.17.15-1.el70:1.17.15-1.el7
Red Hat:enterprise_linux:7::clientsubscription-manager-migration-databefore 0:2.0.31-1.el70:2.0.31-1.el7
Red Hat:enterprise_linux:7::clientsubscription-manager-plugin-containerbefore 0:1.17.15-1.el70:1.17.15-1.el7
Red Hat:enterprise_linux:7::clientsubscription-manager-plugin-ostreebefore 0:1.17.15-1.el70:1.17.15-1.el7

Same product

redhat: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-5375JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks.
    49Plan
  • CVE-2018-14649It was found that ceph-isci-cli package as shipped by Red Hat Ceph Storage 2 and 3 is using python-werkzeug in debug shell mode.
    43Plan
  • CVE-2016-7050SerializableProvider in RESTEasy in Red Hat Enterprise Linux Desktop 7, Red Hat Enterprise Linux HPC Node 7, Red Hat Enterprise Linux…
    41Plan

Published before and after this one in the same product

  • ← EarlierCVE-2010-5325Apr 15, 2016 · Heap-based buffer overflow in the unhtmlify function in foomatic-rip in foomatic-filters before 4.0.6 allows remote attackers to cause a…
    41Plan
  • ← EarlierCVE-2015-5260Jun 7, 2016 · Heap-based buffer overflow in SPICE before 0.12.6 allows guest OS users to cause a denial of service (heap-based memory corruption and…
    31Monitor
  • Later →CVE-2016-6489Apr 14, 2017 · The RSA and DSA decryption code in Nettle makes it easier for attackers to discover private keys via a cache side channel attack.
    32Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
red hat:python-rhsm0:1.17.9-1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:python-rhsm-certificates0:1.17.9-1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:python-rhsm-debuginfo0:1.17.9-1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:subscription-manager0:1.17.15-1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:subscription-manager-debuginfo0:1.17.15-1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:subscription-manager-firstboot0:1.18.10-1.el6 · Red Hat:enterprise_linux:6::clientPackage registry (OSV)
red hat:subscription-manager-gui0:1.17.15-1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:subscription-manager-initial-setup-addon0:1.17.15-1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:subscription-manager-migration0:1.17.15-1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:subscription-manager-migration-data0:2.0.31-1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:subscription-manager-plugin-container0:1.17.15-1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)
red hat:subscription-manager-plugin-ostree0:1.17.15-1.el7 · Red Hat:enterprise_linux:7::clientPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No dated events beyond publication.

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Not on record for this CVE: EPSS history · researcher credit · variant or chain candidate · public bounty program.

Technical details

Attack conditions

  • Someone with local access to the system 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
low · data can be read
Integrity
none
Availability
none
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
Low
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-264 · Permissions, Privileges, and Access Controls

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records