Security readout for executives and security teams
Plain-English summary
CVE-2019-16729 is a local privilege escalation issue in pam-python before 1.0.7-1. In certain PAM configurations, Python environment handling could let a local user gain root privileges. This is primarily urgent for Linux systems that use pam-python in authentication flows.
Executive priority
Treat as high priority where pam-python is used because successful exploitation could mean full root compromise. Prioritize authentication servers, shared Linux hosts, and systems with broad local user access.
Technical view
The issue concerns pam-python’s handling of Python’s default environment variables in PAM contexts. Sources describe possible local root escalation in certain PAM setups before version 1.0.7-1. Debian and Ubuntu published security advisories, and the bundle includes an upstream SourceForge code reference.
Likely exposure
Exposure is likely limited to Linux hosts with pam-python installed and used by PAM service configuration. Systems without pam-python, or with fixed distribution packages, are not indicated as exposed by the supplied sources.
Exploitation context
The supplied bundle does not show CISA KEV listing or public active exploitation evidence. Exploitation requires local access and a vulnerable PAM setup, but the sources do not provide enough detail to define every prerequisite.
Researcher notes
Evidence is strong for vulnerable versions and vendor acknowledgement, but limited on exploitation detail, exact configuration prerequisites, and CVSS scoring. Validate by package version and PAM module usage, then rely on vendor advisories for fixed builds.
Mitigation direction
- Update pam-python to fixed distribution packages or version 1.0.7-1 or later where applicable.
- Follow Debian, Ubuntu, SUSE, or other vendor guidance for affected releases.
- Remove unused pam-python PAM integrations where operationally unnecessary.
- Restrict local account access on systems until remediation is complete.
Validation and detection
- Inventory hosts with pam-python installed.
- Check installed pam-python package versions against vendor advisories.
- Review PAM service configuration for pam-python module usage.
- Confirm updated packages are deployed and authentication still functions.
- Track any unsupported systems requiring compensating controls.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2019-16729 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.suse.com/show_bug.cgi?id=1150510#c1CVE reference · x_refsource_MISC
- https://tracker.debian.org/news/1066790/accepted-pam-python-107-1-source-amd64-all-into-unstable/CVE reference · x_refsource_MISC
- https://sourceforge.net/p/pam-python/code/ci/0247ab687b4347cc52859ca461fb0126dd7e2ebe/CVE reference · x_refsource_MISC
- DSA-4555CVE reference · vendor-advisory, x_refsource_DEBIAN
- [debian-lts-announce] 20191123 [SECURITY] [DLA 2000-1] pam-python security updateCVE reference · mailing-list, x_refsource_MLIST
- USN-4552-1CVE reference · vendor-advisory, x_refsource_UBUNTU
- USN-4552-2CVE reference · vendor-advisory, x_refsource_UBUNTU
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
