Bug 1907521 (CVE-2020-27844)

Summary: CVE-2020-27844 openjpeg: heap-based buffer overflow in opj_t2_encode_packet function in openjp2/t2.c
Product: [Other] Security Response Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED WONTFIX QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: hobbes1069, jaromir.capik, manisandro, nforro, oliver, rdieter
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: openjpeg 2.4.0 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in openjpeg's src/lib/openjp2/t2.c. This flaw allows an attacker to provide crafted input to openjpeg during conversion and encoding, causing an out-of-bounds write. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-12-16 04:18:17 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1907695, 1907696, 1907697, 1907698    
Bug Blocks: 1906158, 1907565    

Description Guilherme de Almeida Suckevicz 2020-12-14 16:47:43 UTC
A flaw was found in OpenJPEG. Specially crafted input file can lead to a heap-based buffer overflow in opj_t2_encode_packet function in openjp2/t2.c.


Comment 1 Todd Cullum 2020-12-15 02:00:09 UTC

Name: zodf0055980 (SQLab NCTU Taiwan)

Comment 2 Todd Cullum 2020-12-15 02:19:23 UTC
Created mingw-openjpeg2 tracking bugs for this issue:

Affects: fedora-all [bug 1907698]

Created openjpeg tracking bugs for this issue:

Affects: fedora-all [bug 1907697]

Created openjpeg2 tracking bugs for this issue:

Affects: epel-7 [bug 1907695]
Affects: fedora-all [bug 1907696]

Comment 6 Todd Cullum 2020-12-16 01:05:24 UTC

This flaw can be mitigated by not converting or encoding untrusted input data using openjpeg. For example, just reading a file with openjpeg does not trigger the flaw. Additionally, the fortify protection limits the degree of exploitation that the flaw could be used to achieve.

Comment 7 Product Security DevOps Team 2020-12-16 04:18:17 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


Comment 8 Sandro Mani 2020-12-17 15:24:15 UTC
This only affects unreleased versions of openjpeg2, specifically newer than https://github.com/uclouvain/openjpeg/commit/4edb8c83374f52cd6a8f2c7c875e8ffacccb5fa5