SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   Application (E-mail Client)  >   Fetchmail Vendors:   Raymond, Eric S.
(Slackware Issues Fix) Fetchmail Can Be Crashed By Remote Users Sending a Specially Crafted E-mail Message
SecurityTracker Alert ID:  1008012
SecurityTracker URL:  http://securitytracker.com/id/1008012
CVE Reference:   CVE-2003-0792   (Links to External Site)
Updated:  Feb 21 2004
Original Entry Date:  Oct 28 2003
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 6.2.4
Description:   A denial of service vulnerability was reported in fetchmail in the processing of long lines. A remote user can cause fetchmail to crash.

It is reported that a remote user can create a specially crafted email message to cause fetchmail to crash. Reports indicate that fetchmail does not properly allocate memory when processing long lines.

No further details were provided.

Impact:   A remote user can cause fetchmail to crash.
Solution:   Slackware has released a fix.

Updated package for Slackware 8.1:
ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/fetchmail-6.2.5-i386-1.tgz

Updated package for Slackware 9.0:
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/fetchmail-6.2.5-i386-1.tgz

Updated package for Slackware 9.1:
ftp://ftp.slackware.com/pub/slackware/slackware-9.1/patches/packages/fetchmail-6.2.5-i486-1.tgz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/fetchmail-6.2.5-i486-1.tgz

The MD5 signatures are:

Slackware 8.1 package:
8dba5701f5f67ba267664548e7cbd45e fetchmail-6.2.5-i386-1.tgz

Slackware 9.0 package:
818773e14c5d43b738190c7ed9a4854b fetchmail-6.2.5-i386-1.tgz

Slackware 9.1 package:
d37acd5314447bd7e727e47432ab6c70 fetchmail-6.2.5-i486-1.tgz

Slackware -current package:
d37acd5314447bd7e727e47432ab6c70 fetchmail-6.2.5-i486-1.tgz

Vendor URL:  catb.org/~esr/fetchmail/ (Links to External Site)
Cause:   Exception handling error
Underlying OS:  Linux (Slackware)
Underlying OS Comments:  8.1, 9.0, 9.1

Message History:   This archive entry is a follow-up to the message listed below.
Oct 17 2003 Fetchmail Can Be Crashed By Remote Users Sending E-mail With Long Lines



 Source Message Contents

Subject:  [slackware-security] fetchmail security update (SSA:2003-300-02)



-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

[slackware-security]  fetchmail security update (SSA:2003-300-02)

Fetchmail is a mail-retrieval and forwarding utility.

Upgraded fetchmail packages are available for Slackware 8.1, 9.0,
9.1, and -current.  These fix a vulnerability where a specially
crafted email could crash fetchmail, preventing the user from
downloading or forwarding their email.

More details about this issue may be found in the Common
Vulnerabilities and Exposures (CVE) database:

  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0792

Here are the details from the Slackware 9.1 ChangeLog:
+--------------------------+
Wed Oct 22 12:10:11 PDT 2003
patches/packages/fetchmail-6.2.5-i486-1.tgz:  Upgraded to fetchmail-6.2.5.
  This fixes a security issue where a specially crafted message could cause
  fetchmail to crash, preventing the user from retrieving email.
  (* Security fix *)
+--------------------------+


WHERE TO FIND THE NEW PACKAGES:
+-----------------------------+

Updated package for Slackware 8.1:
ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/fetchmail-6.2.5-i386-1.tgz

Updated package for Slackware 9.0:
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/fetchmail-6.2.5-i386-1.tgz

Updated package for Slackware 9.1:
ftp://ftp.slackware.com/pub/slackware/slackware-9.1/patches/packages/fetchmail-6.2.5-i486-1.tgz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/fetchmail-6.2.5-i486-1.tgz


MD5 SIGNATURES:
+-------------+

Slackware 8.1 package:
8dba5701f5f67ba267664548e7cbd45e  fetchmail-6.2.5-i386-1.tgz

Slackware 9.0 package:
818773e14c5d43b738190c7ed9a4854b  fetchmail-6.2.5-i386-1.tgz

Slackware 9.1 package:
d37acd5314447bd7e727e47432ab6c70  fetchmail-6.2.5-i486-1.tgz

Slackware -current package:
d37acd5314447bd7e727e47432ab6c70  fetchmail-6.2.5-i486-1.tgz


INSTALLATION INSTRUCTIONS:
+------------------------+

Upgrade fetchmail as root:

# upgradepkg fetchmail-6.2.5-i486-1.tgz


+-----+

Slackware Linux Security Team
http://slackware.com/gpg-key
security@slackware.com

+------------------------------------------------------------------------+
| HOW TO REMOVE YOURSELF FROM THIS MAILING LIST:                         |
+------------------------------------------------------------------------+
| Send an email to majordomo@slackware.com with this text in the body of |
| the email message:                                                     |
|                                                                        |
|   unsubscribe slackware-security                                       |
|                                                                        |
| You will get a confirmation message back.  Follow the instructions to  |
| complete the unsubscription.  Do not reply to this message to          |
| unsubscribe!                                                           |
+------------------------------------------------------------------------+

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.3 (GNU/Linux)

iD8DBQE/nXt/akRjwEAQIjMRAgwvAJ969izJGtKUVzC8cpMgNNiF8fZsLQCfTkY1
icUxLVylNfgMfCaOTlStmm4=
=kspi
-----END PGP SIGNATURE-----

 
 


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2021, SecurityGlobal.net LLC