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Bug#860451: marked as done (libical: CVE-2016-5824)

Your message dated Sat, 13 Apr 2019 16:53:09 +0000
with message-id <[🔎] E1hFLtt-000J7z-Da@fasolo.debian.org>
and subject line Bug#926589: Removed package(s) from unstable
has caused the Debian Bug report #860451,
regarding libical: CVE-2016-5824
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
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-- 
860451: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=860451
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Source: libical
Version: 1.0-1.3
Severity: important
Tags: upstream security
Forwarded: https://github.com/libical/libical/issues/235
Control: found -1 2.0.0-0.5

Hi,

the following vulnerability was published for libical.

CVE-2016-5824[0]:
| libical 1.0 allows remote attackers to cause a denial of service
| (use-after-free) via a crafted ics file.

This one was initially reported at [1], then to [2] and got assigned
the CVE in [3]. There is some unclearness unfortunately around the
libical CVEs due to reports. To verify this one in the [2] report
there is a reproducer which can be use to test/verify a potential fix.

To reproduce, get reproducer from the #1275400 bugzilla.mozilla.org
report:

$ wget 'https://bugzilla.mozilla.org/attachment.cgi?id=8757553' -O 1275400.ics
$ valgrind ./icaltestparser ./1275400.ics >/dev/null
==11789== Memcheck, a memory error detector
==11789== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==11789== Using Valgrind-3.10.0 and LibVEX; rerun with -h for copyright info
==11789== Command: ./icaltestparser ./1275400.ics
==11789== 
==11789== Invalid read of size 1
==11789==    at 0x50E1DCC: vfprintf (vfprintf.c:1642)
==11789==    by 0x518D394: __vsnprintf_chk (vsnprintf_chk.c:63)
==11789==    by 0x518D2F7: __snprintf_chk (snprintf_chk.c:34)
==11789==    by 0x4E70E2A: icalreqstattype_as_string_r (in /usr/lib/libical.so.1.0.0)
==11789==    by 0x4E71C39: icalvalue_as_ical_string_r (in /usr/lib/libical.so.1.0.0)
==11789==    by 0x4E6694A: icalproperty_as_ical_string_r (in /usr/lib/libical.so.1.0.0)
==11789==    by 0x4E60127: icalcomponent_as_ical_string_r (in /usr/lib/libical.so.1.0.0)
==11789==    by 0x4E60235: icalcomponent_as_ical_string (in /usr/lib/libical.so.1.0.0)
==11789==    by 0x400A71: main (in /home/dummy/icaltestparser)
==11789==  Address 0x5660653 is 3 bytes inside a block of size 4 free'd
==11789==    at 0x4C29E90: free (vg_replace_malloc.c:473)
==11789==    by 0x4E65401: icalparser_add_line (in /usr/lib/libical.so.1.0.0)
==11789==    by 0x400A5A: main (in /home/dummy/icaltestparser)
==11789== 
==11789== 
==11789== HEAP SUMMARY:
==11789==     in use at exit: 29,301 bytes in 82 blocks
==11789==   total heap usage: 616 allocs, 534 frees, 153,866 bytes allocated
==11789== 
==11789== LEAK SUMMARY:
==11789==    definitely lost: 4,538 bytes in 57 blocks
==11789==    indirectly lost: 1,105 bytes in 21 blocks
==11789==      possibly lost: 0 bytes in 0 blocks
==11789==    still reachable: 23,658 bytes in 4 blocks
==11789==         suppressed: 0 bytes in 0 blocks
==11789== Rerun with --leak-check=full to see details of leaked memory
==11789== 
==11789== For counts of detected and suppressed errors, rerun with: -v
==11789== ERROR SUMMARY: 32 errors from 1 contexts (suppressed: 0 from 0)

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2016-5824
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-5824
[1] https://github.com/libical/libical/issues/235
[2] https://bugzilla.mozilla.org/show_bug.cgi?id=1275400
[3] https://marc.info/?l=oss-security&m=146685931517961&w=2

Regards,
Salvatore

--- End Message ---
--- Begin Message --- 
Version: 2.0.0-4+rm

Dear submitter,

as the package libical has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/926589

The version of this package that was in Debian prior to this removal
can still be found using http://snapshot.debian.org/.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Scott Kitterman (the ftpmaster behind the curtain)

--- End Message ---
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