Stay Secure with the Latest Linux Advisories

security advisorydenial of servicecritical

Debian: DSA-1674-1 Critical: Jailer Insecure Temp File Issue

Javier Fernandez-Sanguino Pena discovered that updatejail, a component of the chroot maintenance tool Jailer, creates a predictable temporary file name, which may lead to local denial of service through a symlink attack.. - ------------------------------------------------------------------------Debian Security Advisory DSA-1674-1 This email address is being protected from spambots. You need JavaScript enabled to view it. http://www.debian.org/security/ Moritz Muehlenhoff November 30, 2008 http://www.debian.org/security/faq - ------------------------------------------------------------------------Package : jailer Vulnerability : insecure temp file generation Debian-specific: no CVE Id(s) : CVE-2008-5139 Debian Bug : 410548 Javier Fernandez-Sanguino Pena discovered that updatejail, a component of the chroot maintenance tool Jailer, creates a predictable temporary file name, which may lead to local denial of service through a symlink attack. For the stable distribution (etch), this problem has been fixed in version 0.4-9+etch1. For the upcoming stable distribution (lenny) and the unstable distribution (sid), this problem has been fixed in version 0.4-10. We recommend that you upgrade your jailer package. Upgrade instructions - --------------------wget url will fetch the file for you dpkg -i file.deb will install the referenced file. If you are using the apt-get package manager, use the line for sources.list as given below: apt-get update will update the internal database apt-get upgrade will install corrected packages You may use an automated update by adding the resources from the footer to the proper configuration. Debian GNU/Linux 4.0 alias etch - -------------------------------Stable updates are available for alpha, amd64, arm, hppa, i386, ia64, mips, mipsel, powerpc, s390 and sparc. Source archives: Size/MD5 checksum: 27372 403ad34e153f4dbc14621b2bca464487 Size/MD5 checksum: 27920a6bead6286022c54e73bfe1f51e5e5f3 Size/MD5 checksum: 599 2a59c032c5da19b3443c0bd5c573a6e6 Architecture independent packages: Size/MD5 checksum: 11688 8e042e660665df9b8657399ec3845cc8 These files will probably be moved into the stable distribution on its next update. - ---------------------------------------------------------------------------------For apt-get: deb https://www.debian.org/security/ stable/updates main For dpkg-ftp: dists/stable/updates/main Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it. . Critical local DoS flaw in Jailer patched in Debian Security Advisory DSA-1674-2. Ensure you update immediately.. Jailer Insecure, Debian Update, Local Denial, Security Advisory, Temp File Issue. . Severity: Critical. LinuxSecurity.com Team

Nov 30, 2008 •Critical Debian