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Mandrake: screen Buffer overflow vulnerability Print E-mail
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Posted by Team   
Mandrake A vulnerability was discovered and fixed in screen by Timo Sirainen who found an exploitable buffer overflow that allowed privilege escalation.

Hash: SHA1


                Mandrake Linux Security Update Advisory

 Package name:           screen
 Advisory ID:            MDKSA-2003:113
 Date:                   December 8th, 2003

 Affected versions:	 9.0, 9.1, 9.2, Corporate Server 2.1,
			 Multi Network Firewall 8.2

 Problem Description:

 A vulnerability was discovered and fixed in screen by Timo Sirainen
 who found an exploitable buffer overflow that allowed privilege
 escalation.  This vulnerability also has the potential to allow
 attackers to gain control of another user's screen session.  The
 ability to exploit is not trivial and requires approximately 2GB
 of data to be transferred in order to do so.
 Updated packages are available that fix the vulnerability.


 Updated Packages:
 Corporate Server 2.1:
 757d420f6d823e26a487eff794490bbe  corporate/2.1/RPMS/screen-3.9.11-4.1.C21mdk.i586.rpm
 54336329e042b03ebca3c00ca0a1f0c3  corporate/2.1/SRPMS/screen-3.9.11-4.1.C21mdk.src.rpm

 Corporate Server 2.1/x86_64:
 bf60dabe82228d7f879c1fa232df2e20  x86_64/corporate/2.1/RPMS/screen-3.9.11-4.1.C21mdk.x86_64.rpm
 54336329e042b03ebca3c00ca0a1f0c3  x86_64/corporate/2.1/SRPMS/screen-3.9.11-4.1.C21mdk.src.rpm

 Mandrake Linux 9.0:
 2ed29228596116d87146cb2f1eb75ad3  9.0/RPMS/screen-3.9.11-4.1.90mdk.i586.rpm
 db59e945ca7dabc7d81df3388566feb9  9.0/SRPMS/screen-3.9.11-4.1.90mdk.src.rpm

 Mandrake Linux 9.1:
 4d1ce0bb5f0b8335b9f3da4520280fdb  9.1/RPMS/screen-3.9.13-2.1.91mdk.i586.rpm
 025da8fcc964f065afb0c51d2716d472  9.1/SRPMS/screen-3.9.13-2.1.91mdk.src.rpm

 Mandrake Linux 9.1/PPC:
 b8570b8b63461c8f444dcdbe2c4f6e99  ppc/9.1/RPMS/screen-3.9.13-2.1.91mdk.ppc.rpm
 025da8fcc964f065afb0c51d2716d472  ppc/9.1/SRPMS/screen-3.9.13-2.1.91mdk.src.rpm

 Mandrake Linux 9.2:
 656ca2f3bf4796052972997c214d7909  9.2/RPMS/screen-3.9.15-2.1.92mdk.i586.rpm
 4d078d5d3b28c417a51e3a8bfe622f45  9.2/SRPMS/screen-3.9.15-2.1.92mdk.src.rpm

 Multi Network Firewall 8.2:
 c4b0b5a690692dac14eaeb8590fe2d8f  mnf8.2/RPMS/screen-3.9.11-4.1.M82mdk.i586.rpm
 9a363746316958e58a843f4d838b0cf0  mnf8.2/SRPMS/screen-3.9.11-4.1.M82mdk.src.rpm

 To upgrade automatically use MandrakeUpdate or urpmi.  The verification
 of md5 checksums and GPG signatures is performed automatically for you.

 A list of FTP mirrors can be obtained from:

 All packages are signed by MandrakeSoft for security.  You can obtain
 the GPG public key of the Mandrake Linux Security Team by executing:

  gpg --recv-keys --keyserver 0x22458A98

 Please be aware that sometimes it takes the mirrors a few hours to

 You can view other update advisories for Mandrake Linux at:

 MandrakeSoft has several security-related mailing list services that
 anyone can subscribe to.  Information on these lists can be obtained by

 If you want to report vulnerabilities, please contact

 Type Bits/KeyID     Date       User ID
 pub  1024D/22458A98 2000-07-10 Linux Mandrake Security Team
Version: GnuPG v1.0.7 (GNU/Linux)


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