CVE-2015-9258

In Docker Notary before 0.1, gotuf/signed/verify.go has a Signature Algorithm Not Matched to Key vulnerability. Because an attacker controls the field specifying the signature algorithm, they might (for example) be able to forge a signature by forcing a misinterpretation of an RSA-PSS key as Ed25519 elliptic-curve data.

Published: 2018-03-31 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-9258 is rated Moderate Risk (50/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.34%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-9258

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-01 0.24% 0.34% +0.11%
2 2025-03-30 0.34% 0.24% -0.10%
3 2025-03-29 — 0.34% —

Full EPSS history (7 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-9258

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.0 HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2015-9258

GitHub Security Advisory for CVE-2015-9258

GHSA-785h-hrf7-gqxc · Severity: high · Ecosystem: go — Docker Notary Signature Algorithm Not Matched to Key vulnerability

OS Trackers for CVE-2015-9258

vendor priority summary link
debian not yet assigned CVE-2015-9258 not yet assigned priority: Debian including 1 source packages (notary), 4 status rows across 4 suites (bookworm, bullseye, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2015-9258
suse medium CVE-2015-9258 severity moderate: SUSE including 1 source package names (docker), 4 product×package rows across 4 product lines (Magnum Orchestration 7, SUSE Container as a Service Platform 2.0, SUSE Linux Enterprise Module for Containers 12, SUSE OpenStack Cloud 6): Known Not Affected 4. https://www.suse.com/security/cve/CVE-2015-9258/
ubuntu medium CVE-2015-9258 medium priority: Ubuntu including 1 source packages (notary), 5 status rows across 5 suites (artful, bionic, trusty, upstream, xenial): not-affected 3, DNE 1, released 1. https://ubuntu.com/security/CVE-2015-9258

Affected software / configurations for CVE-2015-9258

Vendor Product Version Raw CPE
docker notary < 0.1 cpe:2.3:a:docker:notary:*:*:*:*:*:*:*:*

References for CVE-2015-9258

cvelogic Threat Intelligence