There is a SEGV in Exiv2::Internal::TiffParserWorker::findPrimaryGroups of tiffimage_int.cpp in Exiv2 0.27-RC3. A crafted input will lead to a denial of service attack. Upstream issue: https://github.com/Exiv2/exiv2/issues/590 References: https://github.com/TeamSeri0us/pocs/tree/master/exiv2/20181206
Created exiv2 tracking bugs for this issue: Affects: fedora-all [bug 1660427] Created mingw-exiv2 tracking bugs for this issue: Affects: fedora-all [bug 1660428]
Upstream patch: https://github.com/Exiv2/exiv2/commit/203ab0db28c9666b16069d4056ac5f66f753a51d
Statement: This issue did not affect the versions of exiv2 as shipped with Red Hat Enterprise Linux 6. This issue affects the versions of exiv2 as shipped with Red Hat Enterprise Linux 7. Red Hat Product Security has rated this issue as having a security impact of Low. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2019:2101 https://access.redhat.com/errata/RHSA-2019:2101
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-2018-20097
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2020:1577 https://access.redhat.com/errata/RHSA-2020:1577