Bug 1882344 (CVE-2020-24890) - CVE-2020-24890 libraw: null pointer dereference in parse_tiff_ifd in src/metadata/tiff.cpp
Summary: CVE-2020-24890 libraw: null pointer dereference in parse_tiff_ifd in src/meta...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2020-24890
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1882349 1882350 1882351
Blocks: 1882348
TreeView+ depends on / blocked
 
Reported: 2020-09-24 10:54 UTC by Dhananjay Arunesh
Modified: 2021-04-02 08:35 UTC (History)
10 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-09-25 20:40:55 UTC
Embargoed:

Attachments (Terms of Use)

Description Dhananjay Arunesh 2020-09-24 10:54:28 UTC 
A vulnerability was found in libraw 20.0 has a null pointer dereference vulnerability in parse_tiff_ifd in src/metadata/tiff.cpp, which may result in context-dependent arbitrary code execution.

References:
https://github.com/LibRaw/LibRaw/issues/335
Comment 1 Dhananjay Arunesh 2020-09-24 10:56:57 UTC 
Created LibRaw tracking bugs for this issue:

Affects: epel-6 [bug 1882351]
Affects: fedora-all [bug 1882349]


Created mingw-LibRaw tracking bugs for this issue:

Affects: fedora-all [bug 1882350]
Comment 2 Todd Cullum 2020-09-25 00:26:08 UTC 
L#13165 of internal/dcraw_common.cpp is where the subject code is in 0.19.5.
Comment 3 Todd Cullum 2020-09-25 18:27:20 UTC 
I get no such segfault using LibRaw 0.19.5 as built with g++ 9.3.1 on Fedora. I also do not get it on RHEL7 using g++ 4.8.5 or on RHEL8 using g++ 8.3.1 with the respectively shipped LibRaw rpms. The upstream maintainer identified this as a compiler problem as built by the reporter as the code in LibRaw is correct[1].

1. https://github.com/LibRaw/LibRaw/issues/335#issuecomment-677637276
Comment 4 Todd Cullum 2020-09-25 19:09:15 UTC 
Statement:

LibRaw as shipped in Red Hat Enterprise Linux 7 and 8 are not affected by this flaw - the flaw seems to be isolated to the specific compiler version used to build LibRaw by the reporter. Versions of g++ and LibRaw as shipped did not exhibit the flaw.
Comment 5 Product Security DevOps Team 2020-09-25 20:40:55 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-24890
Note You need to log in before you can comment on or make changes to this bug.