Bug 1672409 (CVE-2019-7317) - CVE-2019-7317 libpng: use-after-free in png_image_free in png.c
Summary: CVE-2019-7317 libpng: use-after-free in png_image_free in png.c
Status: NEW
Alias: CVE-2019-7317
Product: Security Response
Classification: Other
Component: vulnerability   
(Show other bugs)
Version: unspecified
Hardware: All Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
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Whiteboard: impact=low,public=20190125,reported=2...
Keywords: Security
Depends On: 1672410 1672412 1672413 1672414 1674332 1674333 1672411 1672415 1672416
Blocks: 1672417
TreeView+ depends on / blocked
 
Reported: 2019-02-04 21:17 UTC by Laura Pardo
Modified: 2019-02-11 01:40 UTC (History)
2 users (show)

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Description Laura Pardo 2019-02-04 21:17:51 UTC
A vulnerability was found in libpng 1.6.36. The function png_image_free in png.c has a use-after-free because png_image_free_function is called under png_safe_execute.


References:
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12803
https://github.com/glennrp/libpng/issues/275

Comment 1 Laura Pardo 2019-02-04 21:18:45 UTC
Created libpng tracking bugs for this issue:

Affects: fedora-all [bug 1672411]


Created libpng10 tracking bugs for this issue:

Affects: epel-6 [bug 1672410]
Affects: fedora-all [bug 1672414]


Created libpng12 tracking bugs for this issue:

Affects: fedora-all [bug 1672415]


Created libpng15 tracking bugs for this issue:

Affects: fedora-all [bug 1672416]


Created mingw-libpng tracking bugs for this issue:

Affects: epel-7 [bug 1672412]
Affects: fedora-all [bug 1672413]

Comment 2 Doran Moppert 2019-02-11 01:28:24 UTC
This flaw is in the PNG Simplified API, which was introduced upstream in libpng-1.6.0.  Previous versions of libpng are not affected.


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