CVE-2017-1000433

pysaml2 version 4.4.0 and older accept any password when run with python optimizations enabled. This allows attackers to log in as any user without knowing their password.

Published: 2018-01-02 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2017-1000433 is rated Moderate Risk (61.4/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.08%). 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-2017-1000433

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 2025-07-19 2.19% 2.08% -0.11%
2 2025-04-01 2.70% 2.19% -0.51%
3 2025-03-30 — 2.70% —

Full EPSS history (10 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2017-1000433

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.1 3.1 HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H 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:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
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:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.2 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2017-1000433

GitHub Security Advisory for CVE-2017-1000433

GHSA-924m-4pmx-c67h · Severity: critical · Ecosystem: pip — pysaml2 Improper Authentication vulnerability

OS Trackers for CVE-2017-1000433

vendor priority summary link
debian not yet assigned CVE-2017-1000433 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-2017-1000433
gentoo normal CVE-2017-1000433: 1 GLSA(s) (201801-11), 1 atom(s) (dev-python/pysaml2); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2017-1000433
redhat low — https://access.redhat.com/security/cve/CVE-2017-1000433
suse high CVE-2017-1000433 severity important: SUSE including 24 source package names (caasp-openstack-heat-templates-1.0+git.1553079189.3bf8922-1.6.2, crowbar-4.0+git.1551088848.823bcaa3-7.29.2, …), 32 product×package rows across 8 product lines (HPE Helion OpenStack 8, HPE Helion OpenStack Cloud 8, … (8 product lines)): Fixed 26, Known Not Affected 6. https://www.suse.com/security/cve/CVE-2017-1000433/
ubuntu medium CVE-2017-1000433 medium priority: Ubuntu including 1 source packages (python-pysaml2), 5 status rows across 5 suites (artful, trusty, upstream, xenial, zesty): released 3, DNE 1, needs-triage 1. https://ubuntu.com/security/CVE-2017-1000433

Affected software / configurations for CVE-2017-1000433

Vendor Product Version Raw CPE
pysaml2_project pysaml2 <= 4.4.0 cpe:2.3:a:pysaml2_project:pysaml2:*:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

References for CVE-2017-1000433

URL Tags
https://github.com/rohe/pysaml2/issues/451 Patch Third Party Advisory VDB Entry
https://lists.debian.org/debian-lts-announce/2018/07/msg00000.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00038.html Mailing List Third Party Advisory
https://security.gentoo.org/glsa/201801-11 Issue Tracking Third Party Advisory
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