Bug 1608073 (CVE-2018-14048) - CVE-2018-14048 libpng: Segmentation fault in png.c:png_free_data function causing denial of service
Summary: CVE-2018-14048 libpng: Segmentation fault in png.c:png_free_data function cau...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2018-14048
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1608074 1608075 1608076 1608077 1608078 1608079 1608080 1608082 1608846 1910600
Blocks: 1608081
TreeView+ depends on / blocked
 
Reported: 2018-07-24 23:01 UTC by Laura Pardo
Modified: 2023-07-25 16:55 UTC (History)
18 users (show)

Fixed In Version:
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Last Closed: 2018-10-19 10:19:53 UTC
Embargoed:

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Description Laura Pardo 2018-07-24 23:01:01 UTC 
An issue has been found in libpng 1.6.34. It is a SEGV in the function png_free_data in png.c, related to the recommended error handling for png_read_image.


References:
https://github.com/glennrp/libpng/issues/238
https://github.com/fouzhe/security/tree/master/libpng
Comment 1 Laura Pardo 2018-07-24 23:02:19 UTC 
Created libpng tracking bugs for this issue:

Affects: fedora-all [bug 1608074]


Created libpng10 tracking bugs for this issue:

Affects: epel-6 [bug 1608082]
Affects: fedora-all [bug 1608075]


Created libpng12 tracking bugs for this issue:

Affects: fedora-all [bug 1608076]


Created libpng15 tracking bugs for this issue:

Affects: fedora-all [bug 1608077]


Created mingw-libpng tracking bugs for this issue:

Affects: epel-7 [bug 1608080]
Affects: fedora-all [bug 1608078]
Comment 4 Adam Mariš 2018-08-01 07:53:09 UTC 
Statement:

This issue did not affect the versions of libpng as shipped with Red Hat Enterprise Linux 5, 6 and 7 as they did not include the vulnerable code.
Comment 5 Adam Mariš 2018-10-19 10:16:54 UTC 
This seems to be an intersection bug - the way pngwriter uses libpng can cause a segmentation fault. Using libpng alone, the issue has not been observed. We do not ship pngwriter in any Red Hat product.
Comment 7 Nikola Forró 2021-07-15 10:07:28 UTC 
Closing as per comment 5.
Comment 8 Nikola Forró 2021-07-15 10:08:43 UTC 
Sorry, my bad, disregard the previous comment.
Comment 9 juneau 2023-07-25 16:55:41 UTC 
rhel9 notaffected per https://github.com/glennrp/libpng/issues/238#issuecomment-483107600:

The fix is in the master branch and in the public release libpng-1.6.37.
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