exiv2: CVE-2021-29470

Debian Bug report logs - #987450
exiv2: CVE-2021-29470

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Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: exiv2: CVE-2021-29470

Date: Sat, 24 Apr 2021 08:58:45 +0200

Source: exiv2
Version: 0.27.3-3
Severity: important
Tags: security upstream
Forwarded: https://github.com/Exiv2/exiv2/pull/1581
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for exiv2.

CVE-2021-29470[0]:
| Exiv2 is a command-line utility and C++ library for reading, writing,
| deleting, and modifying the metadata of image files. An out-of-bounds
| read was found in Exiv2 versions v0.27.3 and earlier. The out-of-
| bounds read is triggered when Exiv2 is used to write metadata into a
| crafted image file. An attacker could potentially exploit the
| vulnerability to cause a denial of service by crashing Exiv2, if they
| can trick the victim into running Exiv2 on a crafted image file. Note
| that this bug is only triggered when writing 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 insert. The bug is
| fixed in version v0.27.4.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2021-29470
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29470
[1] https://github.com/Exiv2/exiv2/security/advisories/GHSA-8949-hhfh-j7rj
[2] https://github.com/Exiv2/exiv2/pull/1581

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore

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