An issue was discovered in OpenEXR before v2.5.2. Invalid chunkCount attributes could cause a heap buffer overflow in getChunkOffsetTableSize() in IlmImf/ImfMisc.cpp.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-15306
• AcademySoftwareFoundation/openexr#738
• https://github.com/AcademySoftwareFoundation/openexr/blob/master/CHANGES.md
• https://github.com/AcademySoftwareFoundation/openexr/blob/master/SECURITY.md
• https://github.com/AcademySoftwareFoundation/openexr/releases/tag/v2.5.2
• https://lists.debian.org/debian-lts-announce/2020/08/msg00056.html
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LKDRVXORM2VLNHRLFKS3JHRABSHZ5W5M/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SHYAKRAUEMYVCV7U5WLDRE2YFGSV5PIT/
• https://usn.ubuntu.com/4418-1/
• https://www.debian.org/security/2020/dsa-4755
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00025.html
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00048.html
• https://security.gentoo.org/glsa/202107-27