CVE-2011-1011
What it is
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.
At a glance
- Exploitability
- Can be exploited locally on the machine without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 0.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.4% in the next 30 days (EPSS).
- Severity: 6.9 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.4% · EPSS, next 30 days
- Weakness
- CWE-264
- Record status
- Modified
Affected
- Redhat Policycoreutils ≤ 2.0.83
- Redhat Policycoreutils 1.0
- Redhat Policycoreutils 1.1
- Redhat Policycoreutils 1.2
- Redhat Policycoreutils 1.4
- Redhat Policycoreutils 1.6
- Redhat Policycoreutils 1.8
- Redhat Policycoreutils 1.10
Attack profile CVSS 2.0 · 6.9
- Attack vector
- Local
- Complexity
- Medium
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
Raw vector
AV:L/AC:M/Au:N/C:C/I:C/A:C
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2011-1011.md and follow it. Check whether this project is affected by CVE-2011-1011. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://secunia.com/advisories/43415
- https://bugzilla.redhat.com/show_bug.cgi?id=633544
- http://secunia.com/advisories/43415
- https://bugzilla.redhat.com/show_bug.cgi?id=633544
References
- http://archives.neohapsis.com/archives/fulldisclosure/2011-02/0585.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056227.html
- http://openwall.com/lists/oss-security/2011/02/23/1
- http://openwall.com/lists/oss-security/2011/02/23/2
- http://pkgs.fedoraproject.org/gitweb/?p=policycoreutils.git%3Ba=blob%3Bf=policycoreutils-rhat.patch%3Bh=d4db5bc06027de23d12a4b3f18fa6f9b1517df27%3Bhb=HEAD#l2197
- http://secunia.com/advisories/43415
- http://secunia.com/advisories/43844
- http://secunia.com/advisories/44034
- http://www.redhat.com/support/errata/RHSA-2011-0414.html
- http://www.securityfocus.com/bid/46510
- http://www.securitytracker.com/id?1025291
- http://www.vupen.com/english/advisories/2011/0701
- http://www.vupen.com/english/advisories/2011/0864
- https://bugzilla.redhat.com/show_bug.cgi?id=633544
- https://exchange.xforce.ibmcloud.com/vulnerabilities/65641
- http://archives.neohapsis.com/archives/fulldisclosure/2011-02/0585.html
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056227.html
- http://openwall.com/lists/oss-security/2011/02/23/1
- http://openwall.com/lists/oss-security/2011/02/23/2
- http://pkgs.fedoraproject.org/gitweb/?p=policycoreutils.git%3Ba=blob%3Bf=policycoreutils-rhat.patch%3Bh=d4db5bc06027de23d12a4b3f18fa6f9b1517df27%3Bhb=HEAD#l2197
- http://secunia.com/advisories/43415
- http://secunia.com/advisories/43844
- http://secunia.com/advisories/44034
- http://www.redhat.com/support/errata/RHSA-2011-0414.html
- http://www.securityfocus.com/bid/46510