CVE-2017-1000246

Python package pysaml2 version 4.4.0 and earlier reuses the initialization vector across encryptions in the IDP server, resulting in weak encryption of data.

Published: 2017-11-17 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-1000246 is rated Moderate Risk (41.2/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.91%). 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-2017-1000246

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 2026-06-15 0.12% 0.91% +0.78%
2 2025-03-30 0.31% 0.12% -0.18%
3 2025-03-29 — 0.31% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-1000246

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/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:P)
Partial confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:N)
No availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2017-1000246

GitHub Security Advisory for CVE-2017-1000246

GHSA-cq94-qf6q-mf2h · Severity: medium · Ecosystem: pip — Pysaml2 improperly initializes encryption vector

OS Trackers for CVE-2017-1000246

vendor priority summary link
debian not yet assigned CVE-2017-1000246 not yet assigned priority: Debian including 1 source packages (python-pysaml2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2017-1000246
redhat low — https://access.redhat.com/security/cve/CVE-2017-1000246
suse low CVE-2017-1000246 severity low: SUSE including 150 source package names (ansible-2.2.3.0-12.2, ansible-2.4.6.0-3.9.1, …), 270 product×package rows across 4 product lines (HPE Helion OpenStack 8, SUSE OpenStack Cloud 7, SUSE OpenStack Cloud 8, SUSE OpenStack Cloud Crowbar 8): Fixed 270. https://www.suse.com/security/cve/CVE-2017-1000246/
ubuntu negligible CVE-2017-1000246 negligible priority: Ubuntu including 1 source packages (python-pysaml2), 21 status rows across 21 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial, zesty): not-affected 15, ignored 2, needed 2, DNE 1, released 1. https://ubuntu.com/security/CVE-2017-1000246

Affected software / configurations for CVE-2017-1000246

Vendor Product Version Raw CPE
pysaml2_project pysaml2 < 4.6.0 cpe:2.3:a:pysaml2_project:pysaml2:*:*:*:*:*:*:*:*

References for CVE-2017-1000246

URL Tags
https://github.com/rohe/pysaml2/issues/417 Issue Tracking Patch Third Party Advisory
cvelogic Threat Intelligence