Bug 1992198 (CVE-2021-32815) - CVE-2021-32815 exiv2: DoS due to assertion failure in crwimage_int.cpp
Summary: CVE-2021-32815 exiv2: DoS due to assertion failure in crwimage_int.cpp
Status: NEW
Alias: CVE-2021-32815
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1992199 1992200 1996064 1996065 1996066
Blocks: 1992216
TreeView+ depends on / blocked
Reported: 2021-08-10 17:58 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-08-20 18:16 UTC (History)
4 users (show)

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Description Guilherme de Almeida Suckevicz 2021-08-10 17:58:05 UTC
Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The assertion failure is triggered when Exiv2 is used to modify the metadata of a crafted image file. An attacker could potentially exploit the vulnerability to cause a denial of service, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when modifying the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `fi`. ### Patches The bug is fixed in version v0.27.5. ### References Regression test and bug fix: #1739 ### For more information Please see our [security policy](https://github.com/Exiv2/exiv2/security/policy) for information about Exiv2 security.


Upstream patch:

Comment 1 Guilherme de Almeida Suckevicz 2021-08-10 17:58:22 UTC
Created exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1992200]

Created mingw-exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1992199]

Comment 2 Garrett Tucker 2021-08-20 12:53:39 UTC
The attack vector for this CVE is local, not network based. Exiv2 would require manual execution with specific flags, and requires user interaction on a crafted file to be able to exploit this flaw and is not bound to the network.

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