Re: Study: Attacks on package managers (inclusing apt)

2008-07-17 Thread Russ Allbery
Michael Stone <[EMAIL PROTECTED]> writes: > On Thu, Jul 17, 2008 at 03:54:02PM -0400, Jim Popovitch wrote: >> But as long as Release.gpg/Timestamp.gpg are local to the mirror(s), >> and not only on a master, the various .gpg files and packages can, even >> though difficult, be modified on the sing

Re: Study: Attacks on package managers (inclusing apt)

2008-07-17 Thread Michael Stone
On Thu, Jul 17, 2008 at 03:54:02PM -0400, Jim Popovitch wrote: But as long as Release.gpg/Timestamp.gpg are local to the mirror(s), and not only on a master, the various .gpg files and packages can, even though difficult, be modified on the single mirror. IMHO, verification needs to have an alt

Re: Study: Attacks on package managers (inclusing apt)

2008-07-17 Thread Michael Stone
On Thu, Jul 17, 2008 at 11:30:12AM -0400, Micah Anderson wrote: Although PGP-signed Release file prevent tampering with files, the attack doesn't require tampering with files or tampering with signed release files. If I were to MitM security.debian.org, I could provide an outdated (yet properly s

Re: Study: Attacks on package managers (inclusing apt)

2008-07-17 Thread Jim Popovitch
On Thu, Jul 17, 2008 at 3:43 PM, Goswin von Brederlow <[EMAIL PROTECTED]> wrote: > The simple solution would be to create a Timestamp.gpg file that is > signed daily (as oppsoed to Release.gpg being signed only on updates) > and have apt-get warn if it gets old. But as long as Release.gpg/Timestam

Re: Study: Attacks on package managers (inclusing apt)

2008-07-17 Thread Goswin von Brederlow
Micah Anderson <[EMAIL PROTECTED]> writes: > * Michael Stone <[EMAIL PROTECTED]> [2008-07-17 08:09-0400]: >> On Thu, Jul 17, 2008 at 04:46:54PM +0200, Daniel Leidert wrote: >>> Today there were some news about a study from the University of Arizona >>> regarding security issues with package manage

Re: Study: Attacks on package managers (inclusing apt)

2008-07-17 Thread Micah Anderson
* Michael Stone <[EMAIL PROTECTED]> [2008-07-17 08:09-0400]: > On Thu, Jul 17, 2008 at 04:46:54PM +0200, Daniel Leidert wrote: >> Today there were some news about a study from the University of Arizona >> regarding security issues with package management systems (like apt). I >> did not yet read th

Re: Study: Attacks on package managers (inclusing apt)

2008-07-17 Thread Johannes Wiedersich
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 2008-07-17 16:46, Daniel Leidert wrote: > I'm sorry, if this has already been brought up. I did not find a posting > regarding this study, so I hereby start this thread). http://lists.debian.org/debian-devel/2008/07/msg00321.html Johannes -BE

Re: Study: Attacks on package managers (inclusing apt)

2008-07-17 Thread Michael Stone
On Thu, Jul 17, 2008 at 04:46:54PM +0200, Daniel Leidert wrote: Today there were some news about a study from the University of Arizona regarding security issues with package management systems (like apt). I did not yet read the whole study, but probably it's interesting for the project (they wri

Study: Attacks on package managers (inclusing apt)

2008-07-17 Thread Daniel Leidert
Hi all, Today there were some news about a study from the University of Arizona regarding security issues with package management systems (like apt). I did not yet read the whole study, but probably it's interesting for the project (they write about "vulnerabilities"). The study is here: http://w

Re: [SECURITY] [DSA 1611-1] New afuse packages fix privilege escalation

2008-07-17 Thread Eric
On 16 July 2008 21:18:32 Thijs Kinkhorst wrote: > > Debian Security Advisory DSA-1611-1 [EMAIL PROTECTED] > http://www.debian.org/security/ Thijs Kinkhorst > July 16, 2008