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[ GLSA 200707-11 ] MIT Kerberos 5: Arbitrary remote code execution
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PostPosted: Thu Jul 26, 2007 10:26 am    Post subject: [ GLSA 200707-11 ] MIT Kerberos 5: Arbitrary remote code exe Reply with quote

Gentoo Linux Security Advisory

Title: MIT Kerberos 5: Arbitrary remote code execution (GLSA 200707-11)
Severity: high
Exploitable: remote
Date: July 25, 2007
Bug(s): #183338
ID: 200707-11

Synopsis

Multiple vulnerabilities in MIT Kerberos 5 could potentially result in remote code execution with root privileges by unauthenticated users.

Background

MIT Kerberos 5 is a suite of applications that implement the Kerberos network protocol.

Affected Packages

Package: app-crypt/mit-krb5
Vulnerable: < 1.5.2-r3
Unaffected: >= 1.5.2-r3
Architectures: All supported architectures


Description

kadmind is affected by multiple vulnerabilities in the RPC library shipped with MIT Kerberos 5. It fails to properly handle zero-length RPC credentials (CVE-2007-2442) and the RPC library can write past the end of the stack buffer (CVE-2007-2443). Furthermore kadmind fails to do proper bounds checking (CVE-2007-2798).

Impact

A remote unauthenticated attacker could exploit these vulnerabilities to execute arbitrary code with root privileges.

Workaround

There is no known workaround at this time.

Resolution

All MIT Kerberos 5 users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/mit-krb5-1.5.2-r3"


References

CVE-2007-2442
CVE-2007-2443
CVE-2007-2798
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