infinite loop in parse_encoding (t1load.c)

[Lei Zhang]

Ubuntu 14.04's libfreetype has not been patched with the fix for [1], thus applications that use libfreetype6 are vulnerable to infinite loops. e.g. Chromium / Google Chrome. [2] If you add a small patch to apply freetype commit
df14e6 [3], that should fix the problem. I verified this locally.

I have not checked other Ubuntu releases to see if they are affected.

[1] http://savannah.nongnu.org/bugs/index.php?41590
[2] https://code.google.com/p/chromium/issues/detail?id=459050
[3] http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=df14e6c0b9592cbb24d5381dfc6106b14f915e75

[Seth Arnold (seth-arnold)]

Do you know if a CVE has been assigned for this issue?

Thanks

[Lei Zhang (thestig-google)]

From reading [1] [2] and [3], I don't believe a CVE has been assigned.

[Launchpad Janitor (janitor)]

This bug was fixed in the package freetype - 2.5.2-2ubuntu3.1

---------------
freetype (2.5.2-2ubuntu3.1) vivid-security; urgency=medium

  * SECURITY UPDATE: uninitialized memory reads (LP: #1449225)
    - debian/patches-freetype/savannah-bug-41309.patch: fix use of
      uninitialized data in src/cid/cidload.c, src/psaux/psobjs.c,
      src/type1/t1load.c, src/type42/t42parse.c.
    - No CVE number
  * SECURITY UPDATE: denial of service via infinite loop in parse_encode
    (LP: #1492124)
    - debian/patches-freetype/savannah-bug-41590.patch: protect against
      invalid charcode in src/type1/t1load.c.
    - No CVE number

 -- Marc Deslauriers <email address hidden> Thu, 10 Sep 2015 07:07:57 -0400

[Launchpad Janitor (janitor)]

This bug was fixed in the package freetype - 2.5.2-1ubuntu2.5

---------------
freetype (2.5.2-1ubuntu2.5) trusty-security; urgency=medium

  * SECURITY UPDATE: uninitialized memory reads (LP: #1449225)
    - debian/patches-freetype/savannah-bug-41309.patch: fix use of
      uninitialized data in src/cid/cidload.c, src/psaux/psobjs.c,
      src/type1/t1load.c, src/type42/t42parse.c.
    - No CVE number
  * SECURITY UPDATE: denial of service via infinite loop in parse_encode
    (LP: #1492124)
    - debian/patches-freetype/savannah-bug-41590.patch: protect against
      invalid charcode in src/type1/t1load.c.
    - No CVE number

 -- Marc Deslauriers <email address hidden> Thu, 10 Sep 2015 07:09:04 -0400

[Launchpad Janitor (janitor)]

This bug was fixed in the package freetype - 2.4.8-1ubuntu2.3

---------------
freetype (2.4.8-1ubuntu2.3) precise-security; urgency=medium

  * SECURITY UPDATE: uninitialized memory reads (LP: #1449225)
    - debian/patches-freetype/savannah-bug-41309.patch: fix use of
      uninitialized data in src/cid/cidload.c, src/psaux/psobjs.c,
      src/type1/t1load.c, src/type42/t42parse.c.
    - No CVE number
  * SECURITY UPDATE: denial of service via infinite loop in parse_encode
    (LP: #1492124)
    - debian/patches-freetype/savannah-bug-41590.patch: protect against
      invalid charcode in src/type1/t1load.c.
    - No CVE number

 -- Marc Deslauriers <email address hidden> Thu, 10 Sep 2015 07:10:41 -0400

[Lei Zhang (thestig-google)]

Thanks for pushing out the update! I verified it fixed the infinite loop for Google Chrome.

[Launchpad Janitor (janitor)]

This bug was fixed in the package freetype - 2.5.2-4ubuntu2

---------------
freetype (2.5.2-4ubuntu2) wily; urgency=medium

  * SECURITY UPDATE: denial of service via infinite loop in parse_encode
    (LP: #1492124)
    - debian/patches-freetype/savannah-bug-41590.patch: protect against
      invalid charcode in src/type1/t1load.c.
    - No CVE number

 -- Marc Deslauriers <email address hidden> Thu, 10 Sep 2015 07:05:53 -0400