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Home arrow SecurityAlert Database

Arrow  Topic :

UW-IMAP Netmailbox Name Parsing Buffer Overflow Vulnerability


Arrow  SecurityAlert : 47
Arrow  CVE : CVE-2005-2933
Arrow  SecurityRisk : High  Security Risk High  (About)
Arrow  Remote Exploit : Yes
Arrow  Local Exploit : No
Arrow  Exploit Available : No
Arrow  Credit : iDEFENSE Labs
Arrow  Published : 05.10.2005

Arrow  Affected Software : UW-IMAP versions prior to 2004



Arrow  Advisory Content :  

UW-IMAP Netmailbox Name Parsing Buffer Overflow Vulnerability

iDEFENSE Security Advisory 10.04.05
www.idefense.com/application/poi/display?id=313&type=vulnerabilities
October 4, 2005

I. BACKGROUND

UW-IMAP is a popular free IMAP service for Linux and UNIX systems and
is distributed with various Linux distributions. More information can
be found at the vendor website:

http://www.washington.edu/imap/

II. DESCRIPTION

Remote exploitation of a buffer overflow vulnerability in the University
of Washington's IMAP Server (UW-IMAP) allows attackers to execute
arbitrary code.

The vulnerability specifically exists due to insufficient bounds
checking on user-supplied values. The mail_valid_net_parse_work()
function in src/c-client/mail.c is responsible for obtaining and
validating the specified mailbox name from user-supplied data. An error
in the parsing of supplied mailbox names will continue to copy memory
after a " character has been parsed until another " character is found
as shown here:

long mail_valid_net_parse_work (char *name,NETMBX *mb,char *service)
{
int i,j;
#define MAILTMPLEN 1024 /* size of a temporary buffer */
char c,*s,*t,*v,tmp[MAILTMPLEN],arg[MAILTMPLEN];

...snip...

if (t - v) { /* any switches or port specification? */
1] strncpy (t = tmp,v,j); /* copy it */
tmp[j] = '




Arrow  Feedback :

If you have additional information or notice any errors regarding this security advisory, please use contact form or email us at info()securityreason()com.
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