Mandrake alert: Updated screen packages fix buffer overflow vulnerability
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.
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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
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.
Corporate Server 2.1:
Corporate Server 2.1/x86_64:
Mandrake Linux 9.0:
Mandrake Linux 9.1:
Mandrake Linux 9.1/PPC:
Mandrake Linux 9.2:
Multi Network Firewall 8.2:
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 http://www.mandrakesecure.net 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
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