Bug 1747229 (CVE-2019-14368)
Summary: | CVE-2019-14368 exiv2: Heap-based buffer over-read in Exiv2::RafImage::readMetadata() in rafimage.cpp | ||
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Product: | [Other] Security Response | Reporter: | Pedro Sampaio <psampaio> |
Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
Status: | CLOSED WONTFIX | QA Contact: | |
Severity: | low | Docs Contact: | |
Priority: | low | ||
Version: | unspecified | CC: | jgrulich, michel, rdieter |
Target Milestone: | --- | Keywords: | Security |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | If docs needed, set a value | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2019-09-27 12:45:36 UTC | Type: | --- |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | 1747230 | ||
Bug Blocks: | 1747233 |
Description
Pedro Sampaio
2019-08-30 00:30:16 UTC
Created exiv2 tracking bugs for this issue: Affects: fedora-all [bug 1747230] Upstream fix: https://github.com/Exiv2/exiv2/commit/bd0afe0390439b2c424d881c8c6eb0c5624e31d9 same fix as CVE-2019-13504 This bug has the same root cause as CVE-2019-13504. From bug 1729034 comment 4: > When seeking in MemIo (code in MemIo::Impl::seek) the new position is not > properly checked, thus it is possible to move the current position beyond > the limits of the memory buffer. If a read is done later (code in MemIo::Impl::read) > the maximum number of bytes to read is computed by subtracting the current position > value from the buffer's size value. When these two values are implemented as > unsigned values (e.g. size_t), the computation may wraparound and more data than > what really available would be reported, making it possible to read beyond the > buffer's limits. The flaw seems to be introduced in commit https://github.com/Exiv2/exiv2/commit/c72d16f4c402a8acc2dfe06fe3d58bf6cf99069e, where MemIo::Impl fields were changed from long to size_t. 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-2019-14368 |