Hello. Sebastien, there is a good news. On Mon., Jul. 22, Evince has been updated to 3.18.2-1ubuntu4.6 version to fix one security issue (buffer overflow; CVE-2019-1010006)*. And now, I can open '.pdf' files again!
I think, that reinstalling Evince package, also could help - I mean with problem I described, because `debsums(1)` showed, that MD5 sum for 'libpdfdocument.so' and 'libdvidocument.so' files does not match so reinstall - probably - was a solution. However, I have not any possibilities to check this. Thank You and I apologize one more time for such a long time without my answer. Thanks, best regards. _____________________ * https://lists.ubuntu.com/archives/xenial-changes/2019-July/025019.html ** CVE added: https://cve.mitre.org/cgi- bin/cvename.cgi?name=2019-1010006 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to evince in Ubuntu. https://bugs.launchpad.net/bugs/1835285 Title: PDF files don't open; "Failed to load backend for 'application/pdf': libpdfdocument.so" and "Invalid ELF header". Status in evince package in Ubuntu: Incomplete Bug description: Hello. On Wed, Jun 19. 2019, Evince has been updated to version '3.18.2-1ubuntu4.5' [1]. This update added, among other things, some hardening from Ubuntu 18.10 Release. However, now, it is impossible to open any '.pdf' files. When I try to open such file, there is an information (on the red background) in the main Evince window. And It looks this way: ,----[ Opening '.pdf' error ] | | Cannot open document „file:///home/user/Docs/foo-bar.pdf”. | Failed to load backend for 'application/pdf': | /usr/lib/i386-linux-gnu/evince/4/backends/libpdfdocument.so: Invalid ELF | header | `---- There is a reference to »/usr/lib/i386-linux- gnu/evince/4/backends/libpdfdocument.so«. According to `dpkg(1)` command this file is a part of the 'libevdocument3-4' package, which is installed already (version '3.18.2-1ubuntu4.5'). I also tried to open '.pdf' file via terminal, but nothing changed. Here are the results: ,----[ $ evince Docs/foo-bar.pdf ] | | (evince:26918): EvinceDocument-WARNING **: | /usr/lib/i386-linux-gnu/evince/4/backends/libpdfdocument.so: Invalid ELF | header | | (evince:26918): EvinceDocument-WARNING **: | /usr/lib/i386-linux-gnu/evince/4/backends/libpdfdocument.so: Invalid ELF | header | `---- I think, that the whole problem is/could be related with AppArmor and Evince profile changes in the latest update, because - for example - day before, before update, everything was okay. Anyway, described problem/issue started to happen right after Evince update. (To check differences between AppArmor profile versions, please see 2. and 3.). There is one more thing to notice: Evince profile, has never been changed by the User. If it's about AppArmor: I've tried to change Evince profile mode from 'enforce' to 'complain'. Unfortunately, nothing changed. There wasn't any valuable entries in system log files etc. (I'm sorry, but for now, I can not check other variants/solutions, such as: (a) disable Evince profile via `aa-disable(8)` command or (b) make links between »/etc/apparmor.d/usr.bin.evince« file and »/etc/apparmor.d/disable/« directory, next use `apparmor_parser(8)` command to remove profile etc.) ✖ NOTE: to make some more tests, I've tried to open '.djvu' file, but without success. It seems, that there is exactly the same informations as with '.pdf' files. Of course, Evince (»/etc/apparmor.d/usr.bin.evince«) profile contains rule to open such file format etc. and many others, see 4. So, according to all of this, maybe "Summary" should be changed to reflect this situation? Maybe something like: "PDF and other files don't open; "Failed to load (...)". Sebastien, what do You think?. Here are some additional informations: ✗ Description: Ubuntu 16.04.6 LTS ✗ Release: 16.04 ✗ Architecture: x86_32/i386 ✗ Linux: 4.4.0-155-generic ✓ AppArmor: 2.10.95-0ubuntu2.11 ✓ Evince: 3.18.2-1ubuntu4.5 Best regards. ______________ [1] https://lists.ubuntu.com/archives/xenial-changes/2019-June/024691.html [2] http://launchpadlibrarian.net/429511526/evince_3.18.2-1ubuntu4.4_3.18.2-1ubuntu4.5.diff.gz [3] http://launchpadlibrarian.net/429293224/evince_3.18.2-1ubuntu4.1_3.18.2-1ubuntu4.5.diff.gz [4] https://wiki.gnome.org/action/show/Apps/Evince/SupportedDocumentFormats?action=show&redirect=Evince%2FSupportedDocumentFormats To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/evince/+bug/1835285/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
