CVE-2017-1000433: debian debian_linux Improper Authentication
Vulnerability summary
CVE-2017-1000433 is a high (CVSS 8.1) Improper Authentication vulnerability in debian debian_linux. EPSS estimates a 2.54% chance of exploitation in the next 30 days, higher than 85% of scored vulnerabilities.
Severe, CVSS 8.1 (NVD); no exploitation reported by the 5 checked sources; EPSS 3% (FIRST, 03-11-2026)
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 2 · Related 1Timeline
- 02-01-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
7 scores · 4 sources · 4 versions- OSV · PypiEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · UbuntuEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.1HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.54%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
No change 0.00 pp
From 2.54% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Debian2 products
- python-pysaml2< 4.5.0-2 | < 2.0.0-1+deb8u2
- debian_linuxEOL8.0 | 9.0
PyPI1 product
- pysaml2< 4.5.0
Pysaml2_project1 product
- pysaml2≤ 4.4.0
Suse1 product
- python-pysaml2&distro=SUSE OpenStack Cloud 7< 4.0.2-3.3.2
Ubuntu1 product
- python-pysaml2< 3.0.0-3ubuntu1.16.04.3
5 vendors · 6 products
References
17 links
lists.debian.org/debian-lts-announce/2018/07/msg00000.htmlMailing ListX Refsource MLISTThird Party AdvisoryWEB- security.gentoo.org/glsa/201801-11Vendor AdvisoryX Refsource GENTOOIssue TrackingThird Party AdvisoryWEBAdvisory
- lists.debian.org/debian-lts-announce/2021/02/msg00038.htmlMailing ListX Refsource MLISTThird Party AdvisoryWEB
Show all 17 references
- github.com/rohe/pysaml2PACKAGE