ISC DHCPD VSPRINTF Buffer Overflow Vulnerability

BID:10591

Info

ISC DHCPD VSPRINTF Buffer Overflow Vulnerability

Bugtraq ID: 10591
Class: Boundary Condition Error
CVE: CVE-2004-0461
Remote: Yes
Local: No
Published: Jun 22 2004 12:00AM
Updated: Jul 12 2009 05:16AM
Credit: Discovery is credited to Gregory Duchemin and Solar Designer.
Vulnerable: SuSE SUSE Linux Enterprise Server 8
+ Linux kernel 2.4.21
+ Linux kernel 2.4.19
SuSE SUSE Linux Enterprise Server 7
+ Linux kernel 2.4.19
SuSE Linux 8.1
SuSE Linux 8.0 i386
SuSE Linux 8.0
S.u.S.E. SuSE eMail Server III
S.u.S.E. Linux Personal 9.1
S.u.S.E. Linux Personal 9.0 x86_64
S.u.S.E. Linux Personal 9.0
S.u.S.E. Linux Personal 8.2
S.u.S.E. Linux Office Server
S.u.S.E. Linux Firewall on CD
S.u.S.E. Linux Database Server 0
S.u.S.E. Linux Connectivity Server
S.u.S.E. Linux Admin-CD for Firewall
Redhat Fedora Core2
Mandriva Linux Mandrake 10.0 AMD64
Mandriva Linux Mandrake 10.0
Mandriva Linux Mandrake 9.2 amd64
Mandriva Linux Mandrake 9.2
Mandriva Linux Mandrake 9.1 ppc
Mandriva Linux Mandrake 9.1
Mandriva Linux Mandrake 9.0
ISC DHCPD 3.0.1 rc13
ISC DHCPD 3.0.1 rc12
Infoblox DNS One Appliance 2.4 .0-8A
Infoblox DNS One Appliance 2.4 .0-8
Infoblox DNS One Appliance 2.3.1 -R5
Not Vulnerable: ISC DHCPD 3.0.1 rc14

Discussion

ISC DHCPD VSPRINTF Buffer Overflow Vulnerability

ISC DHCPD is reported likely vulnerable to remotely exploitable buffer overflow vulnerabilities on systems which lack a vsnprintf() library function.

On systems which lack the vsnprintf() library call, ISC DHCPD defines vsnprintf as:
#define vsnprintf(buf, size, fmt, list) vsprintf (buf, fmt, list)

This definition discards the size argument to the function, potentially allowing any occurrence of vsnprintf() to be exploitable, by overflowing whatever intended buffer is passed to the library call.

Other locations in DHCPD utilizing this function may be exploitable. Successfully exploiting this issue may lead to a denial of service condition, or remote code execution in the context of the DHCPD server.

This issue is reported to affect ISC DHCPD versions 3.0.1rc12 and 3.0.1rc13.

Exploit / POC

ISC DHCPD VSPRINTF Buffer Overflow Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

Solution / Fix

ISC DHCPD VSPRINTF Buffer Overflow Vulnerability

Solution:
Mandrake has released advisory MDKSA-2004:061 to address this issue. Please see the attached advisory for details on obtaining and applying fixes.

SuSE linux has released advisory SuSE-SA:2004:019 to address this and other issues. Please see the referenced advisory for further information.

Red Hat Fedora has released advisory FEDORA-2004-190 dealing with this and other issues. Please see the referenced advisory for more information.

OpenPKG has released an advisory (OpenPKG-SA-2004.031) to address this and other issues in dhcpd. Please see the referenced advisory for more information.

ISC has addressed this issue with the release of ISC DHCPD 3.0.1rc14.


ISC DHCPD 3.0.1 rc12

ISC DHCPD 3.0.1 rc13

References

ISC DHCPD VSPRINTF Buffer Overflow Vulnerability

References:

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