Bug 1928794 (CVE-2020-24870) - CVE-2020-24870 LibRaw: Stack buffer overflow in LibRaw::identify_process_dng_fields() in identify.cpp
Summary: CVE-2020-24870 LibRaw: Stack buffer overflow in LibRaw::identify_process_dng_...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-24870
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: 1928801 1928796 1928798 1928800 1928802 1931841
Blocks: 1928799
TreeView+ depends on / blocked
 
Reported: 2021-02-15 15:14 UTC by Pedro Sampaio
Modified: 2021-11-09 23:24 UTC (History)
15 users (show)

Fixed In Version: LibRaw 0.20.1
Doc Type: If docs needed, set a value
Doc Text:
A stack buffer overflow vulnerability was found in LibRaw. This flaw allows a malicious user to send a crafted image that, when parsed by an application linked to LibRaw, leads to a denial of service or potential code execution.
Clone Of:
Environment:
Last Closed: 2021-11-09 23:24:38 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:4381 0 None None None 2021-11-09 18:30:35 UTC

Description Pedro Sampaio 2021-02-15 15:14:47 UTC 
A flaw was found in libraw. Stack buffer overflow in LibRaw::identify_process_dng_fields in identify.cpp may lead to local denial of service or local arbitrary code execution from a user crafted file.

References:

https://github.com/LibRaw/LibRaw/commit/4feaed4dea636cee4fee010f615881ccf76a096d
https://github.com/LibRaw/LibRaw/issues/330
Comment 1 Pedro Sampaio 2021-02-15 15:16:03 UTC 
Created LibRaw tracking bugs for this issue:

Affects: fedora-all [bug 1928796]


Created kf5-libkdcraw tracking bugs for this issue:

Affects: epel-8 [bug 1928801]
Affects: fedora-all [bug 1928800]


Created mingw-LibRaw tracking bugs for this issue:

Affects: fedora-all [bug 1928798]


Created rawtherapee tracking bugs for this issue:

Affects: fedora-all [bug 1928802]
Comment 3 Mauro Matteo Cascella 2021-02-23 11:44:57 UTC 
Function LibRaw::identify_process_dng_fields() in src/metadata/identify.cpp was introduced to LibRaw in version 0.20.0 via commit [1]. However, the same vulnerable code (to be precise, part of it) was already present in internal/dcraw_common.cpp since 0.19.0 [2]. For this reason, I'd consider the version of LibRaw as shipped with RHEL-8 (0.19.5) to be potentially affected by this flaw. Note that the bug is not easily reproducible on RHEL.

[1] https://github.com/LibRaw/LibRaw/commit/d1975cb0e055d2bfe58c9d845c9a3e57c346a2f9
[2] https://github.com/LibRaw/LibRaw/commit/291039ba1f8c546b9100261f769f1cf6b70de7b5
Comment 5 Mauro Matteo Cascella 2021-03-05 15:15:27 UTC 
Statement:

LibRaw is not supposed to be used in RHEL by network-facing applications, thus reducing the impact of this flaw.
Comment 6 Mauro Matteo Cascella 2021-03-05 15:17:16 UTC 
See https://bugzilla.redhat.com/show_bug.cgi?id=1853477#c2.
Comment 7 errata-xmlrpc 2021-11-09 18:30:34 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4381 https://access.redhat.com/errata/RHSA-2021:4381
Comment 8 Product Security DevOps Team 2021-11-09 23:24:36 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-2020-24870
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