---

[Message Precedent sur la mailing][Message Suivant sur la mailing][Precedent dans le fil][Prochain dans le fil][Index par Date][Index par fil] [SA31561] Xen "flask_op" Buffer Overflow Vulnerability

---

---

Want a new job? link://[click] link://[click]

TITLE: Xen "flask_op" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID: SA31561

VERIFY ADVISORY: link://[click]

CRITICAL: Less critical

IMPACT: Security Bypass, DoS

WHERE: Local system SOFTWARE: Xen 3.x link://[click]

DESCRIPTION: A vulnerability has been reported in Xen, which can be exploited by malicious, local users to cause a DoS (Denial of Service) or potentially bypass certain security restrictions.

The vulnerability is caused due to an error when processing the "flask_op" hypercall. This can be exploited by DomU users to cause a heap-based buffer overflow and execute arbitrary code with Dom0 privileges.

Successful exploitation requires that Xen is compiled with support for the "XSM:FLASK" module.

The vulnerability is reported in version 3.3. Other versions may also be affected.

SOLUTION: Fixed in the mercurial repository.

link://[click] PROVIDED AND/OR DISCOVERED BY: The vendor credits Rafal Wojtczuk, McAfee

ORIGINAL ADVISORY: link://[click] link://[click]

About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities.

Subscribe: link://[click]

Definitions: (Criticality, Where etc.) link://[click]

Please Note: Secunia recommends that you verify all advisories you receive by clicking the link.

Secunia NEVER sends attached files with advisories.

Secunia does not advise people to install third party patches, only use those supplied by the vendor.

---

• Precedent par Date: [SA31575] Red Hat Update for Tampered OpenSSH Packages
• Suivant par Date: [SA31545] Uniwin eCart Professional SQL Injection and Cross-Site Scripting
• Precedent par fil : [SA31575] Red Hat Update for Tampered OpenSSH Packages
• Suivant par fil : [SA31545] Uniwin eCart Professional SQL Injection and Cross-Site Scripting
• Index(s):
  • Date
  • Fil

---

Archives de la liste de diffusion Secunia
Archives de la liste de diffusion BugTraq
Archives de la liste de diffusion DailyDave
Archives de la liste de diffusion FunSec
Archives de la liste de diffusion Full Disclosure
Archives de la liste de diffusion Focus-IDS (FD)
Archives de la liste de diffusion Webappsec (FD)
Archives de la liste de diffusion Security-basics (FD)
Archives de la liste de diffusion Vulndiscuss
Archives de la liste de diffusion Vulnwatch