Bug 514980
| Summary: | Your system may be seriously compromised! | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Nicolas Mailhot <nicolas.mailhot> |
| Component: | bind | Assignee: | Adam Tkac <atkac> |
| Status: | CLOSED WORKSFORME | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | medium | Docs Contact: | |
| Priority: | low | ||
| Version: | rawhide | CC: | atkac, ovasik, pwouters |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2009-08-06 11:11:26 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 473303 | ||
Would it be possible to tell me how did you reproduced this issue, please? I have installed: bind-9.6.1-6.P1.fc12.x86_64 selinux-policy-targeted-3.6.26-2.fc12.noarch and I'm running on 2.6.31-0.118.rc5.fc12.x86_64 kernel with no SELinux denial. If I can reproduce it I'll post the info. There have been several selinux, bind and glibc updates in rawhide since (In reply to comment #2) > If I can reproduce it I'll post the info. There have been several selinux, bind > and glibc updates in rawhide since Ok, if it happens again please reopen this issue. For not I'm closing this ticket. |
Your system may be seriously compromised! SELinux has denied the named the ability to mmap low area of the kernel address space. The ability to mmap a low area of the address space, as configured by /proc/sys/kernel/mmap_min_addr. Preventing such mappings helps protect against exploiting null deref bugs in the kernel. All applications that need this access should have already had policy written for them. If a compromised application tries modify the kernel this AVC would be generated. This is a serious issue. Your system may very well be compromised. Contact your security administrator and report this issue. Contexte source: unconfined_u:system_r:named_t:s0 Contexte cible: unconfined_u:system_r:named_t:s0 Objets du contexte: None [ memprotect ]source: named Chemin de la source: /usr/sbin/namedPort: <Inconnu> Hôte: Paquetages RPM source: bind-9.6.1-6.P1.fc12 Paquetages RPM cible: Politique RPM: selinux-policy-3.6.26-2.fc12 Selinux activé: True Type de politique: targeted MLS activé: True Mode strict: Enforcing Nom du plugin: mmap_zero Nom de l'hôte: Plateforme: Linux 2.6.31-0.112.rc4.git3.fc12.x86_64 #1 SMP Thu Jul 30 15:29:28 EDT 2009 x86_64 x86_64 Compteur d'alertes: 12 Première alerte: ven. 31 juil. 2009 20:19:00 CEST Dernière alerte: ven. 31 juil. 2009 20:19:00 CEST ID local: f0c205ff-5c07-40c7-b0c0-bb040db09024 Numéros des lignes: Messages d'audit bruts : node= type=AVC msg=audit(1249064340.25:68): avc: denied { mmap_zero } for pid=2844 comm="named" scontext=unconfined_u:system_r:named_t:s0 tcontext=unconfined_u:system_r:named_t:s0 tclass=memprotect node= type=AVC msg=audit(1249064340.25:68): avc: denied { mmap_zero } for pid=2844 comm="named" scontext=unconfined_u:system_r:named_t:s0 tcontext=unconfined_u:system_r:named_t:s0 tclass=memprotect node= type=AVC msg=audit(1249064340.25:68): avc: denied { mmap_zero } for pid=2844 comm="named" scontext=unconfined_u:system_r:named_t:s0 tcontext=unconfined_u:system_r:named_t:s0 tclass=memprotect node= type=SYSCALL msg=audit(1249064340.25:68): arch=c000003e syscall=125 success=yes exit=0 a0=7fffdf697374 a1=0 a2=7fffdbf1fe80 a3=24 items=0 ppid=2843 pid=2844 auid=500 uid=25 gid=25 euid=25 suid=25 fsuid=25 egid=25 sgid=25 fsgid=25 tty=(none) ses=1 comm="named" exe="/usr/sbin/named" subj=unconfined_u:system_r:named_t:s0 key=(null)