Vulnerability Bulletins |
Aumento de privilegios en systrace en sistemas BSD |
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Vulnerability classification |
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| Property | Value |
| Confidence level | Oficial |
| Impact | Aumento de privilegios |
| Dificulty | Experto |
| Required attacker level | Acceso remoto con cuenta |
System information |
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| Property | Value |
| Affected manufacturer | UNIX |
| Affected software |
OpenBSD 3.8 OpenBSD 3.9 OpenBSD 4.0 NetBSD 3 |
Description |
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Se ha descubierto un desbordamiento de entero en OpenBSD 3.8, 3.9 y NetBSD 3. La vulnerabilidad reside en la función "systrace_preprepl" (STRIOCREPLACE) en systrace. Un atacante local podría causar una denegación de servicio, elevar sus privilegios o leer memoria arbitraria del kernel mediante argumentos numéricos especialmente grandes a systrace ioctl. |
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Solution |
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Actualización de software OpenBSD OpenBSD 3.8 ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.8/common/019_systrace.patch OpenBSD 3.9 ftp://ftp.openbsd.org/pub/OpenBSD/patches/3.9/common/014_systrace.patch OpenBSD 4.0 ftp://ftp.openbsd.org/pub/OpenBSD/patches/4.0/common/003_systrace.patch NetBSD Actualice desde el CVS, recompile y reinstale el kernel. ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-current/src/sys/kern/kern_systrace.c |
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Standar resources |
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| Property | Value |
| CVE | CVE-2006-5218 |
| BID | 20392 |
Other resources |
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OpenBSD Security Advisory October 7, 2006 (14) http://www.openbsd.org/errata.html#systrace OpenBSD Security Advisory October 7, 2006 (19) http://www.openbsd.org/errata38.html#systrace OpenBSD Security Advisory November 4, 2006 (0) http://www.openbsd.org/errata.html#systrace NetBSD Security Advisory 2006-024 ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-024.txt.asc |
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Version history |
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| Version | Comments | Date |
| 1.0 | Aviso emitido | 2006-10-16 |
| 1.1 | Aviso actualizado por OpenBSD (Noviembre 4, 2006) | 2006-11-06 |
| 1.2 | Aviso emitido por NetBSD (2006-024) | 2006-12-04 |